Student A sprays perfume at her seat in the front of the room. Ten minutes later Student B, at the
back, smells the perfume. Which of the following is the best explanation of the delay in Student B
smelling the perfume?

Answer:

yes

Explanation:

A: No, vaccines do not use weak and dead pathogen.

A2: Some vaccines do use those substances but are unapproved.

Most unapproved vaccines are illegal & not approved by CDC or the government. So no, they do not include those,

Answer:

Image result for Passive transport is the movement of substances across a cell membrane without the use of

Passive transport is a movement of ions and other atomic or molecular substances across cell membranes without need of energy input. Unlike active transport, it does not require an input of cellular energy because it is instead driven by the tendency of the system to grow in entropy.

Humans or either animals

Answer:

The Earth's magnetic field is believed to be generated by electric currents in the conductive iron alloys of its core, created by convection currents due to heat escaping from the core.

Explanation:

Answer:

Explanation:

1. Discovering how exactly the building blocks of life work

2. Being able to determine how things in the past have evolved

3. To learn to problem solve

4. To learn the characteristics of genes

5. We can help develop new technologies

6. Learning how I decoupled traits from Botha parents can be useful

7.science can help you understand your own body and how it works

8. Learning about the environment around us

9. Learning how the safety of science can prevent disasters

10. If we didn’t have science today we wouldn’t know half of the things we see

Answer:

True

Explanation:

Not only carbohydrates, as was once thought, but also amino acids, proteins, lipids (or fats), pigments, and other organic components of green tissues are synthesized during photosynthesis.

Answer:

The period is 0.04 sec

Explanation:

This problem is based on oscillatory motion.

What is the period of oscillation?

This can be defined as the time taken to complete one full revolution or oscillation.

given that the  fly flaps its wings back and forth 25 times in one second. then the frequency is 25 Hz

we know that period T= 1/F

T= 1/25

T=0.04 sec

The scientists believe the continents formed Pangaea about 300 million years ago. The correct option is C.

According to National Geographic, the Pangaea theory proposed that the tectonic plates that make up the planet's external crust glided over the inner layers until they consolidated as a landmass encircled by a huge ocean called Panthalassa.

After a while, the Angaran continent near the North Pole began to move south and combined with the northern part of the expanding Euramerican continent, forming the Pangea supercontinent. This process was completed approximately 300 million years ago.

Alfred Wegener observed the same thing in 1912 and proposed that the continents were once scaled down into a single protocontinent known as Pangaea.

Thus, the correct option is C.

For more details regarding Pangaea, visit:

https://brainly.com/question/11694556

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Answer:

The answer is; extremophiles

These organisms are found in places on earth that would be damaging to most life on earth. There are different categories of extremophiles depending on their environment. For example, those that live in the extreme cold (even below  150C ) are called Psychrophiles while Xerophiles live extreme desiccation.

Answer:

True

Explanation:

As has been stated, carbohydrates are the most-important direct organic product of photosynthesis in the majority of green plants using H20 and Co2. The formation of a simple carbohydrate, glucose.

Answer:

b

assuming the sun would be out that day, after an hour the chocolate would have melted, but both b and d would work, but b is more likely.  

Answer:

D) Some of the rabbits are better adapted to the drier environment.​

Explanation:

Natural selection is when the environment favours certain traits in organisms. Organisms that possess these traits are more likely to survive and pass on the traits to their offspring, leading to evolution.

Speciation is when populations become different enough (for example due to natural selection acting on variation in the population) that new species form.

If some rabbits posses traits that make them better adapted to the drier environment, then these rabbits are more likely to survive and pass on these traits to their babies. Eventually, this can cause speciation, as the rabbits that live in the desert are subject to different selective pressures (drier environment)

The purpose of HOV lanes is to encourage more efficient use of highway capacity by increasing average vehicle occupancy, thereby accommodating high levels of passenger travel while reducing total traffic volumes. ... The result is a pure gain to highway users.

Answer:

The correct answer is:

The groom had to ask the bride’s parents for permission to marry her.

Explanation:

Marriage in ancient Greek was less of a personal relationship than it was a social relationship. Asking a parent or guardian by the groom for permission to marry the bride is a tradition that spans several cultures and was also evident in ancient Greek marriage rituals. The permission is usually given by the father, and once that happens, the couple is officially engaged. Marriages were also arranged through the meeting of the fathers of the young couple, basing the marriage on their interests in expanding a business or forging an alliance between the families, with little concern about what the groom thought of the situation, and no regard for what the wife wished

Answer:

B. The groom had to ask the bride's parents for permission to marry her.

Explanation: This is the correct answer on Edge 2021, just took the quiz. Hope this helps ^-^.

Answer:

A

Explanation:

explanation is given in answer

Testosterone is a steroid hormone. It is a primary sex hormone. It plays key role in the development of male reproductive tissues such as testes and prostate.

Testosterone is lipophilic signaling molecule. The plasma membrane consist of lipid bilayer so testosterone diffuse through the lipid bilayer and enters the cell.

So, the answer is option A because testosterone is nonpolar and can diffuse through the membrane.

other options-

B because testosterone covalently binds to a surface protein and transports into the cell- incorrect. Testosterone doesn't binds to a surface protein and transports into the cell, it diffuses through the cell membrane.

C because testosterone dissolves in water and flows through the channel-incorrect. Testosterone is nonpolar.

D because testosterone is filtered out of the extracellular fluid and taken into the cell by endocytosis-incorrect. Testosterone is not filtered out of the extracellular fluid and it is not taken into the cell by endocytosis.

Learn more about testosterone-

https://brainly.com/question/18084441?referrer=searchResults

Answer:

Water plays a crucial role in the melting of Earth's mantle. ... At oceanic subduction zones, water released by the subducted slab may induce melting of the overlying mantle wedge or even the slab itself, giving rise to arc magmatism, or may evolve into a supercritical fluid.

Answer:

We eat because we are sad and deprived of love. That one compliment you got from 5 years ago from a girl? Yeah, you still remember that don't you? Well, guess what, now she's married to a guy more handsome than you. When she gave you that compliment, she forgot about it a day later. Why are you still holding on? Eating tubs of icecream any crying yourself to sleep will do no good. Time to pack it up Nickocado Avocado.

Nah I'm joking :')

Explanation:

1. During the day, the earth is heated by the sun. If skies are clear, more heat reaches the earth's surface (as in the diagram below). This leads to warmer temperatures.However, if skies are cloudy, some of the sun's rays are reflected off the cloud droplets back into space. Therefore, less of the sun's energy is able to reach the earth's surface, which causes the earth to heat up more slowly. This leads to cooler temperatures.When forecasting daytime temperatures, if cloudy skies are expected, forecast lower temperatures than you would predict if clear skies were expected.At night cloud cover has the opposite effect. If skies are clear, heat emitted from the earth's surface freely escapes into space, resulting in colder temperatures.However, if clouds are present, some of the heat emitted from the earth's surface is trapped by the clouds and reemitted back towards the earth. As a result, temperatures decrease more slowly than if the skies were clear.When forecasting nighttime temperatures, if cloudy skies are expected, forecast warmer temperatures than you would predict if clear skies were expected.

2. The possible sources of error are human error and misreading the data.

3, As air temperature increases, air can hold more water molecules, and its relative humidity decreases. When temperatures drop, relative humidity increases. High relative humidity of the air occurs when the air temperature approaches the dew point value.

4. When forecasting if cloudy skies are expected, forecast lower temperatures than you would predict if clear skies were expected.

5. A more reliable approach to weather forecasting is known as the steady-state or trend method. This method is based on the knowledge that weather conditions are strongly influenced by the movement of air masses that often can be charted quite accurately.

6. Weather forecasts are made by collecting as much data as possible about the current state of the atmosphere (particularly the temperature, humidity and wind) and using understanding of atmospheric processes (through meteorology) to determine how the atmosphere evolves in the future

Answer:

D-patterns of background radiation

Explanation:

According to the NASA, astronomers can estimate how old the universe is by comparing the age of the oldest stars and the rate of expansion of the universe. The rate of expansion of the universe is based on the Big Bang theory and it states that our universe is continuously expanding since it first developed. Astronomers measure Cosmic Microwave Background radiation resulting from the Big Bang.

Answer:

Patterns of background radiation

Explanation:

I just took the test lol

Answer: The outcome of cellular respiration is that the plant takes in glucose and oxygen, gives out carbon dioxide and water and releases energy. Plants respire at all times of the day and night because their cells need a constant energy source to stay alive.

Explanation:

Answer:

M=2650

Explanation:

If Density's equation is D=m/v then yo find mass, you do the opposite.

M=D*V

M=1.06*2500

M=2650

To check:

1.06=2650/2500(D=M/V)

Plastids. Plant plastids are a group of closely related membrane-bound organelles that carry out many functions. They are responsible for photosynthesis, for storage of products such as starch, and for the synthesis of many types of molecules that are needed as cellular building blocks.

Answer:

its d

Explanation:

Answer:

Explanation:

i cant see it unu

Explanation:

a. Photosystem II Light shining on pigments energizes electrons that come from water.

b. Electron transport chain: High energy electrons move down the chain, which pumps H+ ions to inside of the thylakoid

c. Photosystem I: electrons are reenergized with more light.

d. Electron Transport: the reenergized electrons are transferred to NADP+ to make NADPH

Answer:

Explanation:

Classification of Living Things Notes

1. An organism is a living thing.

2. Characteristics of all living things:

1) Organisms obtain and use resources.  All organisms must obtain resources, such as food and water, which provide required energy to perform the basic processes of life, like growing, developing, and repairing injured parts.  

2) Organisms respond to stimuli:  A stimulus is any change in an organism’s surroundings that will cause the organism to react. Examples of environmental stimuli include changes in the amount of light present, changes in temperature, sound, amount of water, space, amounts of food present. The reaction to the stimulus is called a response. It can be an action or behavior performed by the organism.

3) Organisms reproduce-produce offspring that have similar characteristics as the parents. Reproduction can occur in one of two ways:

a) Asexual reproduction involves one parent that makes an exact copy of itself. The offspring are identical to the parent.

b) Sexual reproduction involves two parents. Sperm cell from the male and egg cell from the female combine to produce offspring that have characteristics from each parent.

4)  Organisms grow and develop. Growth is the process of an organism becoming larger. Development is the process that occurs during the life of an organism that results in the organism becoming more complex. Organisms require energy to grow and develop.

3. Classification is the process that scientist use to arrange organisms into groups based on the shared observable characteristics.

4. Taxonomy is the science of identifying and classifying organisms into groups.

5. A taxonomist is a scientist who identifies and names organisms based on their similarities and differences.

6. Taxonomist use physical characteristics as well as DNA, genetic information, to classify organisms.

7. Scientist all over the world study organisms, in order to avoid confusion scientists need a universal way of naming organisms.

8. A dichotomous key is a tool used to identify organisms. It uses a series of questions, each with only 2 answers.

9. Linnaeus developed a system for classifying organisms called binomial nomenclature.  It uses two Latin words to name an organism. The name is made up of the genus and species of the organism.  The name is written in italics, the genus is capitalized, and the species is lower case; for example, the scientific name for a human is Homo sapiens.

10. The Linnaeus system is made up of seven levels, Kingdom, Phylum, Class, Order, Family, Genus, and Species.

1) King Philip Could Only Find Green Socks is one mnemonic way to remember the order of the levels. Another is King Philip Came Over For Good Spaghetti.

2) The levels are arranged from the most broad, Kingdom, to the most specific, Species.

11. Kingdom- organisms are placed into kingdoms based on their ability to make food and the number of cells in their body.

12. Phylum (phyla is plural)- In the Plant Kingdom, phyla are sometimes called divisions. In the Animal Kingdom, there are 35 different phyla.  

13. Class, Order, Family-these levels become even more specific. Each level has fewer organisms that have more in common with each other as you move down the levels.

14. Genus- contains closely related organisms. The genus is the first word in an organism’s scientific name.

15. Species- consists of all the organisms of the same type which are able to breed and produce young of the same kind. The species is the second word in an organism’s scientific name.

16. Most scientists classify organisms into 5 kingdoms: Plants, Animals, Protists, Fungi, and Monera.  

1) Plants (Plantae)- the plant kingdom is made up of plants. Plants are autotrophs, they make their own food. Plants are eukaryotes; they are made up of many cells. Plants are divided into 2 groups: vascular and nonvascular.

2) Animals (Animalia)- the animal kingdom is made up of animals. Animals are heterotrophs- they must obtain food by eating it. Animals are eukaryotes. The 35 phyla are divided into two groups: vertebrates and invertebrates.

3) Fungi- the fungi kingdom is made up of molds, yeasts, and mushrooms. Fungi are heterotrophs because they must absorb their food. Yeasts are one celled, while molds and yeasts are eukaryotes. Their cells have a nucleus, a cell wall, and no chlorophyll. Most fungi are decomposers, they break down dead organisms.

4) Protists (Protista)- the protists are made up of organisms that cannot easily fit into the plant, animal, or fungi kingdoms. They are one celled organisms with a nucleus or simple multicelled organisms. Some protists are autotrophs, some are heterotrophs.

5) Monera- the Monera kingdom is made up of bacteria. Their cells do not contain a nucleus. Some bacteria are autotrophs, some are heterotrophs.

Answer:

The answer is J

Explanation: