A biologist was in a forest when he came across a family of squirrels hiding nuts for

the winter. The biologist was interested in this behavior, so he stayed and watched the

squirrels for a few hours. He recorded what he observed in a notebook. Which of the

following explains why this type of research is NOT considered an experiment?

O The biologist did not observe the squirrels for long enough to collect data.

The biologist did not collect valid data on the different species of squirrels present.

O The biologist observed the squirrels and did not test variables.

O The biologist came across the squirrels by chance and had no formal plan.

Answers

Answer 1

Answer:

biologist observed the squirrels and did not test variables


Related Questions

What natural resources are used to make artificial sweeteners?.

Answers

phenylalanine and aspartic acid

If you know this help please !!

Answers

Answer:

shipping

Explanation:

Some invasive species obviously can't swim. Others cannot walk either. MOst are spread by human activity.

A. Shipping cause it makes more sense and i couldn’t agree more with what the other person answer Hope this helps.

A cell that phagocytizes an antigen and displays fragments of it on its surface for recognition by other cells of the immune system is a(n) ______ cell.

Answers

Antigen presenting cell is a cell phagocytizes an antigen and displays fragments of it on its surface for recognition by other cells of the immune system

What is Antigen presenting cells?

An antigen-presenting cell refer to an immune cell that detects, engulfs, and pass a message to the adaptive immune response about an infection. When a pathogen is detected, the antigen presenting cells will engulf the pathogen and digest it to form many different fragments of the antigen.

Therefore, Antigen presenting cell is a cell phagocytizes an antigen and displays fragments of it on its surface for recognition by other cells of the immune system

Learn more about antigen presenting cell here.

https://brainly.com/question/13022436

Which choice orders the average size of these star groups from smallest to largest?


Group of answer choices


A. White dwarf, red giant, main sequence


B. Red giant, main sequence, white dwarf


C. White dwarf, main sequence, red giant


D. Main sequence, white dwarf, red giant

Answers

Answer:

red giant , main sequence,white dwarf which is B

how about this question? its biologoy

The "language" of RNA is called the
Choose...
, and it uses three-letter "words" called
Choose...
.

Answers

Answer:

I don't see anything listed, provide an image or equation

Explanation:

1/10
SKILL LEVE
Beginn
A
is the general term for any remains or traces of an
ancient organism.
Enter the answer
Check it
CRATCHPAD
~Improve this question

Answers

Answer:

yes its yes cool man cool fine

Explanation:

Explain ing this is the yes to the yess

Which descriptions represent social consequences of sustainable land use?

1. Land is zoned for housing

II. Environmental degradation stops

III. Less land use causes economic downturn


o I and II
O ll and III
OI only
O lll only

Answers

Answer:

II and III

Explanation:

Did the quiz : ()

Answer:ll and lll

Explanation:

What is the role of oxygen in photosynthesis and in cellular respiration?

A) Oxygen is used in photosynthesis to produce glucose and is released during cellular respiration

B) Oxygen is released in photosynthesis and used in cellular respiration to produce energy

C) Oxygen is combined with carbon dioxide in photosynthesis to release energy and released from carbon dioxide during cellular respiration

D) Oxygen is released from glucose during photosynthesis and combines with carbon dioxide to produce energy during cellular respiration

Answers

The main role of oxygen in photosynthesis and respiration is that Oxygen is released in photosynthesis and used in cellular respiration to produce energy.

Role of oxygen in photosynthesis and respiration

In photosynthesis, water and carbon dioxide reacts to form oxygen and glucose while on the other hand, In cellular respiration, oxygen is used to break down glucose in order to release energy in the form of ATP.

So we can conclude that the main role of oxygen in photosynthesis and respiration is that Oxygen is released in photosynthesis and used in cellular respiration to produce energy.

Learn more about respiration here: https://brainly.com/question/22673336

How are gasses exchanged in the alveoli

Answers

Answer:

The alveolar walls and capillary walls share a membrane. That's how close they're getting. This allows oxygen and carbon dioxide to readily pass from the respiratory system to the circulation. Oxygen molecules bind to red blood cells as they return to the heart.

How does carbon get from plants to animals like cows?

Answers

Answer:

Animals breath out Carbon and breath in Oxegon but plantes breath out Oxegon and breath in Carbon so a animal breath out the Carbon and the paint breaths that in and breaths out the Oxegon so the animal breaths the

Oxegon in

Hope This Helps :)

Why is it necessary to take all of the prescribed doses of antibiotics even when we are already feeling better in advance of finishing them?

Answers

It's because taking them regularly until the prescription is complete helps ensure that all of the illness-causing bacteria are killed or prevented from multiplying. If you stop taking them early, the bacteria could still be alive and be spread from person to person. On top of that, the bacteria could develop to be antibiotic-resistant!

A population in genetic equilibrium has constant___and____ frequencies and no evolution

Answers

Speed and time is your answer to the question
It would be “ constant speed and time”

When a wave reaches a coastline, it releases a burst of energy that generates a current, which runs parallel to the shoreline and this type of current is called a longshore current as you can see here. Review the movement of the longshore current. What is the result of this sheet of water movi n on and off the shore?

Answers

Answer:

if it is longshore

it leaves the waste materials in the water on the lanf

what TWO biomes experience all 4 seasons?

Answers

Answer:

Explanation:

1, What are the 2 biomes that experience all four seasons?

Tropical forests are warm, humid, and found close to the equator. Temperate forests are found at higher latitudes and experience all four seasons. Boreal forests are found at even higher latitudes, and have the coldest and driest climate, where precipitation occurs primarily in the form of snow

What common sandwich condiment/spread is a good source of vitamin e?.

Answers

Answer:

Peanut butter

Explanation:

Peanut butter's vitamins are 19.5% vitamin E. Other condiments and spreads are usually under this.

Why does subduction occur at oceanic and continental plate boundaries?

Answers

Answer:

Due to the high density of the oceanic plate.

Explanation:

can I get brainliest pls

Necrotic cell death :___________
a) usually involves inflammation.
b) is usually much slower than apoptotic cell death.
c) usually requires several days.
d) is the result of a genetic program for self-destruction.
e) is apoptotic.

Answers

Necrotic cell death is caused by external factors and usually involves inflammation.

What is necrotic cell death?

Necrotic cell death is cell death caused by external factors such as injury or infection which usually involved swelling of cells, plasma membrane rupture and spilling out of cellular components.

Unlike apoptosis or programmed cell death, necrotic cell death is a harmful way for cells to die.

Thus, it can be concluded that necrotic cell death usually involves inflammation.

Learn more about necrotic cell death at: https://brainly.com/question/8404576

Which does NOT cycle through an environment?

Answers

Answer:

Sunlight

Explanation:

Oxygen is used by plants;

Water is used by everyone

The sun is far away from the earth and the sun's rays help guide the process, but is not an independent thing close.

Answer:

sunlight

Explanation:

sunlight is a form of energy and it does not cycle through an environment. energy is used up for heat or other things in the process and doesn't cycle throughout an ecosystem

What does fossil evidence show about evolution?

Answers

Answer:

Answer below

Explanation:

Fossils provide physical examples of what organisms have looked like over time. For example, we can look at giraffes over time, who have evolved to have had long necks. When we look as fossil records of giraffes and similar species, we see that the longer ago that animal lived, the shorter their neck was, and as time progresses, the neck gets longer. However, we also see that in general the giraffes with longer necks, regardless of time period, will have lived longer and healthier lives (we can usually tell this just by how big the fossil is), as with longer necks the animal was able to reach more food and live longer. That giraffe then reproduced and shared their longer neck traits, while those with genetic markings to make their necks shorter will have died before reproducing. Therefore, we can see all forms of evolution through fossils.

Which of these is a major difference between skeletal muscle and cardiac muscle? A.Skeletal muscle works very quickly; cardiac muscle works very slowly. B.Skeletal muscle does not fatigue ; cardiac muscle is fatigues quickly. C.Skeletal muscle is involuntary ; cardiac muscle is voluntary. D.Skeletal muscle is fatigues. muscle does not.

Answers

D.Skeletal muscle is fatigues. muscle does not.

Skeletal muscle is striated muscle-essentially the fibers slide on each other to shorten and lengthen.
Cardiac muscle is a bit of a mish-mash. It is quite contractile and has striations like skeletal muscle, but also has discs within the structure which speed the contractile process

Skeletal muscle is voluntary and will not contract unless stimulated by a nerve fiber (or an electrode). Cardiac muscle is involuntary and contracts even without nervous stimulation.

Answer:

D.Skeletal muscle gets fatigued while the cardiac muscle does not.

Explanation:

Cardiac Muscle Skeletal Muscle

  Length

    Shorter                Longer

Controlled by

Autonomic nervous        Somatic nervous

        system                        system

The key difference between skeletal muscle and cardiac muscle is that skeletal muscle is under voluntary control while cardiac muscle is under involuntary control. Muscle tissue is one of the four types of tissues present in the animal body.

Which process copies an organism's DNA?
A mutation
B replication
C transcription
D translation

Answers

Answer:

I think it's is B. replication

Answer:

replication is the process copies an organisms DNA

Why must males inherit colorblindness from their mothers.

Answers

Answer:

below

Explanation:

B/c (red-green) color blindness is found on X-chromosome and males take X-chromosome fron their mother and Y-chromosome from their father.

why is the folding up of the leaves of a sensitive plant on touching with a finger not a tropism​

Answers

Answer:

The folding of leaves of a sensitive plant is not a case of tropism (like thigmotropism) because in this case the direction of movement of leaves does not depend on the direction of stimulus (touch).

Explanation:

[tex] \huge \purple{ \red{ \bf❥} \frak{Answer}}[/tex]

[tex] \red{ \small \text{It is a non-directional movement}}[/tex]

where as Tropism is a directional movement where the direction of the movement of the plant part is towards the stimulus

What ecosystem services and resources do we use/rely on for everyday life? (list as many as possible)

Answers

Ecosystems underpin all human life and activities. The goods and services they provide are vital to sustaining well-being, and to future economic and social development. The benefits ecosystems provide include food, water, timber, air purification, soil formation and pollination.

Hope you have a great day;) and can you mark me branniest

Help me in exercise 7 and 8

Answers

Answer:

I took a picture of my answers and put it in, and for exercise 8 do you have words to fill in the blanks? or is it just your own words.

Explanation:

the respiratory tract is blank to the intestines.

1.) superior
2. inferior
3. lateral
4. deep​

Answers

Answer:

1.) superior

Explanation:

the respiratory tract is above the intestines

The correct answer is superior.

What is the respiratory tract's anatomy?The respiratory tract is the component of the human respiratory system that is engaged in the process of breathing. Respiratory mucosa or respiratory epithelium lines the respiratory tract. The air is inhaled through the nose or mouth.

Learn more about the respiratory tract here:-

https://brainly.com/question/9657940

#SPJ2

______ carbohydrates have little nutrition and are broken down quickly within your body.
a fibrous
b mineral
c complex
d simple
i need help
b
c
d

Answers

Answer:

d. Simple Carbohydrates

Explanation:

They contain "empty" calories meaning they have little nutritional value but still give you calories. It also is broken down relatively quickly because they are already very close in form to the simple sugars that enter your bloodstream.

Simple carbohydrates have little nutrition and are broken down quickly within your body. So, the correct option is D.

What are Carbohydrates?

Sugar molecules make up carbohydrates, or carbs. Carbohydrates constitute one of the three primary nutrients included in foods and beverages, together with proteins and fats. Glucose is created by your body's breakdown of carbs. The primary source of energy for the cells, tissues, and organs in your body is glucose, sometimes known as blood sugar.

A vast variety of both good and bad foods, including bread, beans, milk, popcorn, potatoes, cookies, spaghetti, soft drinks, corn, and cherry pie, include carbohydrates. They can take on various shapes as well. Starches, fibres, and sugars are the most prevalent and plentiful types. Simple carbs are easily broken down by your body and provide little nutrients.

Therefore, the correct option is D.

Learn more about Carbohydrates, here:

https://brainly.com/question/29775112

#SPJ3

The Convention on the Protection and
Use of Transboundary Watercourses and
International Lakes of 1992 established
laws to govern all water that transect the
U.S
A. and the Bahamas
B. and Canada
C. and Hawaii
D. and Russia

Answers

Answer:

B. and canada

Explanation:

Sana po itoy maka tulong

List the types of enzymes made in the salivary glands, the stomach, the pancreas and the small intestine. In each case say which food substance the enzymes break down.​

Answers

salivary glands-

amylase

starch

stomach-

gastric enzymes

protein

pancreas-

pancreatic enzymes

fats, carbohydrates, proteins

small intestine-

amylase, protease, lipase

fats, carbohydrates, proteins

Types of digestive enzymes made in different organs of digestive enzyme are:

Salivary glands: AmylaseStomach: PepsinPancreas: Proteases, Lipases and AmylaseSmall Intestine: Peptidases, Sucrases, Lactase and Maltase

What are digestive enzymes?

Digestive enzymes are the enzymes that help in the breakdown of ingested food so as to facilitate the absorption of energy.

The digestive enzymes and the type of food substances they break down are below:

Amylase: starchPepsin: proteinProtease: peptidesLipase: lipids, fatsPeptidase: peptidesSucrase: sucroseLactase: lactaseMaltase: maltose

To know more about digestive enzymes here

https://brainly.com/question/13586391

#SPJ2

Where is dna stored in octoploid

Answers

Answer:

DNA is found in the nucleus of each cell.

Explanation:

Other Questions
30 POINTS!!! WILL GIVE BRAINLIEST!!!!Penelope In Homers Odyssey, Odysseuss wife Penelope must ward off suitors from other Greek kingdoms (the Achaeans) as she waits for her husbands return after decades of absence. This adaptation of the Odyssey explains Penelopes strategy. 1 One of the suitors complained to Penelopes son about her long delay in agreeing to remarry. 2 "The trouble is not with the Achaean wooers, but in your own mother, for she is the craftiest of women. For it is now the third year, and the fourth is fast going by, since she began to deceive us. She gives hope to all, and makes promises to every man, and sends them messages, but her mind is set on other things. And she has devised in her heart this trick besides; she set up in her halls a mighty loom and told us, You princely youths, my wooers, now that the goodly Odysseus is dead, wait patiently, however eager you are, until I finish this funeral robe I am weaving for my father-in-law Laertes, for the day when he dies. This way no-one shall blame me if he lies without a shroud. 3 "So she spoke, and our hearts agreed. So then in the daytime she would weave the robe, and in the night unravel it, in the dim light of torches. Thus for the space of three years she hid the thing by craft and deceived the Achaeans; but when the fourth year arrived and the seasons came round, then at the last one of her women who knew all declared it, and we found her unraveling the splendid robe. Thus she was forced to finish it against her will. "Amoretti XXIII by Edmund SpenserPenelope for her Ulysses sake, Devised a web her wooers to deceive; In which the work that she all day did make The same at night she did again unreaveSuch subtle craft my Damsel doth conceive, Thimportune suit of my desire to shun: For all that I in many days do weave, In one short hour I find by her undone. So when I think to end that I begun, I must begin and never bring to end: For with one look she spills that long I spun, And with one word my whole years work doth rend. Such labour like the spiders web I find, Whose fruitless work is broken with least wind. Describe the ways in which the poem "Amoretti XXIII" uses and transforms the Greek story of Penelope, using specific details from both texts When an EC2 instance is being modified to have more RAM, is this considered Scaling Up or Scaling Out? Quillwork was considered a _________ art form. a. mans b. womans c. childs d. shamans please select the best answer from the choices provided a b c d Below is a map of the Mediterranean world at the time of the Second Punic War. Use this map below to answer the following question:A map of Europe that shows the Mediterranean areas controlled by the Romans, Carthaginians, and their allies during the Second Punic War. Blue is used to indicate areas controlled by Carthage, and light blue is used to indicate allies of Carthage. Red is used to indicate areas controlled by Romans, and pink is used to indicate allies of Rome. The eastern half of Spain and the North African coast are dark blue. The central and northern areas of Italy, as well as the islands Sicily and Sardinia, are dark red. A small area on the eastern coast of Gaul is shaded pink. The southern tip of the Italian peninsula is a lighter blue color. Macedonia is colored orange.Public DomainRoman controlled areas are red and their allies are shaded pink. Carthage controlled the areas in dark blue, and its allies are shaded light blue.Which conclusion can be drawn about the Second Punic War from the information in the map? (4 points) aRome had established firm control of the Italian peninsula prior to the Second Punic War. bThe Roman's allies played a key role in their victory on the Italian peninsula. cRome was also at battle with the Carthaginians over territory in the Eastern Mediterranean. dRome had enemies both on the Italian peninsula and in North Africa. 2. Box A has 2x the mass of Box B. Compare the inertia of the 2 bodies. Can yall please help me on this one question.. im not good at this part.. What are the solutions to the quadratic equation (x + 4)(3x - 5) = 0? For each item, find the product of the complex number and its complex conjugate. Show your work.(a) 10-14i(b)-5-12i(c) 8+3i(d) - 9-5i Present Holland/netherland using persuasive techniques.Landmarks, experiences, food, culture, history,etc Urgent help me please According to an article, 75% of high school seniors have a driver's license. Suppose we take a random sample of 300 high school seniors and find the proportion who have a driver's license. Find the probability that more than 77% of the sample have a driver's license. Begin by verifying that the conditions for the Central Limit Theorem for Sample Proportions have been met. Cert 4 real estate if an agent (A)_ that (B)_ or creates an (C)_ when there is (D) _ , they expose themselves to (E) _ Daniel Webster of Massachusetts was against slavery.Why did he agree to compromise on the issue?He was swayed by John C. Calhoun's sound arguments in favor of slavery. AHe wanted to appeal to the proslavery majority of voters in Massachusetts. BHe was willing to do almost anything to keep the United States together.CHe wanted to run for president and needed southern support.D The four utilities offered to consumers through retailing are:. Label the tissue layers of the small intestine1. Serosa. 2. Outer-longitudinal. 3. Sub-mucosa. 24. Mucosa. 5. Intestinal villi. 6. Lumen. What type of cross-section is this?2 mPage 3 of 4692 wordsLXEnglishAddress all elements of the prompt in your responseParaphrase, quote andFocusES Cirice Corp. is considering opening a branch in another state. The operating cash flow will be $165,300 a year. The project will require new equipment costing $583,000 that would be depreciated on a straight-line basis to zero over the 6-year life of the project. The equipment will have a market value of$171,000 at the end of the project. The project requires an initial investment of $39,500 in net working capital, which will be recovered at the end of the project. The tax rate is 40 percent. What is the project's IRR? What is the slope of the line tangent to the polar curve r=3 at the point where =2 ? What category do the majority of businesses in Louisiana fall into?O Fortune 500 companiesO large corporationsO small businessesO immigrant businesses Xavier opened a savings account with a deposit of $12,000. the account earned simple interest. he did not make any additional deposits or withdrawals. at the end of 3 years, the account balance was $12,324. what is the annual interest rate on this account? question 5 options: 0.9% 1.8% 2.7% 3.6% Distribute to create an equivalent expression with the fewest symbols possible.6(3c - 5d + 6) =6(3c5d+6)=6, left parenthesis, 3, c, minus, 5, d, plus, 6, right parenthesis, equals ALL of the Students at Beach Middle School voted for a trip to the zoo or the aquarium.- 25% of the students voted for the aquarium- 120 students voted for the zooWhat is the total number of students at Beach Middle School?