Answer:
B the distribution of sand on an ocean floor
Explanation:
Rabbits normally eat some grass as a food source. In a habitat, a new species of grass is introduced that out-competes most of the original species of grass. The new species of grass contains a chemical that is usually toxic and fatal to most rabbits. Assuming that all rabbits in this habitat will eat some of the new species of grass, how will the presence of the new grass most likely decrease the diversity of the rabbit population in this habitat?
Answer:
Well The Diversity will decrease.
Explanation:
If the Grass Is Toxic to the Rabbit than the rabbits will either die from eating the grass, or they will stop eating it and need to find a new food source. this will lead to the to the rabbits that are resistant to the toxic grass being able to reproduce more and therefor becoming more abundant.
all compounds are negatively charged, true or false?
Answer:
false
Explanation:
"Electrons are the "material" of the charge that is flowing. Therefore, current can never cause a metal object to become positively or negatively charged, because the net number of electrons in the metal object will never change due to current flow."
Cells sometimes use passive trarert
to move Dholecules across their
membranes. The rate at which a cell
engages in passive transport is
determined by -
A the number of vacuoles that the
cell contains.
B the composition of the cell
membranes.
C the size of the cell's chloroplasts.
D the amount of energy that the cell
generates.
14. Alex writes down his car racing times for each day.
Mon – 5hr Tue – 1hr
Wed –2hr Thu – 6hr Fri – No drive.
He drives at a constant speed of 100km/h. Work out the distance he drove each day. On which day did he drive the furthest?
Answer: One positive integer is 5 more than the other. When the reciprocal of the larger number is subtracted from the reciprocal of the smaller the result is 5/14. Find the two integers.
Example: The difference between the reciprocals of two consecutive positive odd integers is 2/15. Find the integers.
Work-Rate Problems
There are two equivalent formulas to choose from when solving work-rate problems. If two people are working together on a job then their work rates add and they can perform the job working together in a shorter amount of time. If we let = the time it takes a person to complete a task then his work rate is 1/. In other words, he can complete the 1 job in number of hours. If we let = the time it takes a second person to complete the task and = the time it takes for both people working together we get the following work-rate formulas:
Example: Bill’s garden hose can fill the pool in 12 hours. His neighbor has a hose that can fill the pool in 15 hours. How long will it take to fill the pool using both hoses?
Example: Joe can complete his yard work in 3 hours by himself. If his son helps it will only take 2 hours working together. How long would the yard work take if his son was working alone?
Example: Norm and Cliff can paint the office in 5 hours working together. Being a professional painter, Norm can paint twice as fast as Cliff. How long would it take Cliff to paint the office by himself?
Work-Rate Problem: One small water hose takes twice as long to fill the basin as the larger water hose. If the two hoses working together take 40 minutes to fill the basin how long would it have taken each hose to individually fill the basin?
Work-Rate Problem: Joe can texture and paint a room in 8 hours working alone. It would take Bill 6 hours to do the same job. How long will it take them to complete the job working together?
Work-Rate Problem: Two printers, working at the same rate, work together with printing payroll checks for 4 hours before one breaks down. The other takes 3 more hours to complete the job working alone. How long would it have taken only one printer to complete the job?
Uniform Motion Problems (Distance Problems)
We have set up uniform motion problems using the formula = *. For the following motion problems, we will need the equivalent formula / = to set up the equations.
Example: The first leg of Mary’s road trip consisted of 120 miles of traffic. When the traffic cleared, she was able to drive twice as fast for 300 miles. If the total trip took 9 hours, then for how much time was she stuck in traffic?
Example: A passenger train can travel 20 miles per hour faster than a freight train. If the passenger train can cover 390 miles at the same time it takes the freight train to cover 270 miles, how fast is each train?
Example: Billy rode his skateboard 24 miles to his grandmother’s house for the day. It was a rough ride so he borrowed his grandmother’s bicycle for the return trip. Going twice as fast on the bicycle the return trip took 2 hours less time. What was his average speed on the bicycle?
Example: Brett lives on the river 45 miles upstream from town. When the current is 2 miles per hour he can row his boat downstream to town for supplies and back in 14 hours. What is his average rowing speed in still water?
Explanation:
4. In what way is a human lung similar to a plant leaf?
Answer:
Both organs are made up of only one type of protective dermal tissue.
Both organs are responsible for the exchange of oxygen and carbon dioxide gases.
Explanation:
Answer:
Explanation:
A plant leaf is an organ. In what way is a human lung similar to a plant leaf? Both organs are made up of only one type of protective dermal tissue. Both organs are responsible for the exchange of oxygen and carbon dioxide gases. When you think about it they both need to breathe. You can say this and expand it more
The graph illustrates the activity level of three common digestive enzymes, across a range of pH values. Hydrochloric acid is used by the stomach to aid in digestion and causes the stomach to have an average pH of 1.5 to 3.5. Which enzyme is likely to be active in the acidic environment of the stomach?
Answer:
Digestion starts with the sight, thought, or smell of food. When the brain anticipates an incoming meal, the vagus nerve sends a message to the stomach causing the release of acetylcholine. The binding of acetylcholine to G cells in the stomach starts the secretion of gastrin and, in combination with acetylcholine and histamine, stimulates parietal cells in the gastric glands of the stomach body to start secreting hydrochloric acid (HCl).
Explanation:
What is the mass number when it is stable?
Answer:
The mass number (symbol A, from the German word Atomgewicht [atomic weight]),[1] also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. It is approximately equal to the atomic (also known as isotopic) mass of the atom expressed in atomic mass units. Since protons and neutrons are both baryons, the mass number A is identical with the baryon number B as of the nucleus as of the whole atom or ion. The mass number is different for each different isotope of a chemical element. Hence, the difference between the mass number and the atomic number Z gives the number of neutrons (N) in a given nucleus: N = A − Z.[2]
The mass number is written either after the element name or as a superscript to the left of an element's symbol. For example, the most common isotope of carbon is carbon-12, or 12
C
, which has 6 protons and 6 neutrons. The full isotope symbol would also have the atomic number (Z) as a subscript to the left of the element symbol directly below the mass number: 12
6C
.[3]
Stars begin their life cycle in: a. a black hole. b. a nova. c. a nebula. d. a supernova. explain for every answer PLEASE I NEED IT IS DUE TODAY!!!!!!!!!!!!!!!!
Answer:
C. a nebula
Explanation:
a supernova is when it explodes and then it turns into a black hole
Will the CO2 molecules that exist today still be the CO2 molecules in a million years
Answer:
Yes
Explanation:
cause nothing is created or lost it is just cycled.
Yes, the carbon dioxide molecules existing today will be the same carbon dioxide molecules in a million years because the matter is not created or destroyed.
What is carbon dioxide?
Carbon dioxide (CO2) is a colorless gas with a sour taste and a little harsh odor. It is one of the most significant greenhouse gases associated with global warming, but it only makes up a small portion of the atmosphere on Earth (roughly 3 volumes per 10,000).
It is produced during the combustion of carbon-containing materials, fermentation, and animal respiration, as well as during the photosynthesis of carbohydrates by plants.
The so-called greenhouse effect is caused by the gas because its presence in the atmosphere prevents part of the radiant energy that Earth receives from being reflected back into space.
In the industrial setting, it is recovered for a wide range of uses from flue gases, by-products of the hydrogen-preparation process for ammonia synthesis, lime kilns, and other sources.
Therefore, the same carbon dioxide will exist in a million years as today.
Read more about carbon dioxide, here
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How has the development of a pine and then a hardwood forest affected populations of shrubs?
A The development of the two types of forests has negatively affected populations of shrubs by decreasing the amount of pollinators in the area.
B The development of the two types of forests has positively affected populations of shrubs by increasing the amount of water available to shrubs.
С The development of the two types of forests has negatively affected populations of shrubs by decreasing the amount of space available to shrubs.
D The development of the two types of forests has positively affected populations of shrubs by increasing the amount of sunlight in the area.
Answer: Option C.
The development of the two types of forest has negatively affected the populations of shrubs by decreasing the amount of space available for shrubs
Explanation:
The development of the two types of forest has negatively affected the populations of shrubs by decreasing the amount of space available for shrubs because pine and hardwood are huge trees bigger than shrubs and occupy space. As they occupy space the received most of the sunlight, their roots is very extensive and draw water and nutrients from the soil which makes these resources not very much available for shrubs and hence it drastically affected the populations of shrubs. Because of their heights, wideness and big leaves, little sunlight gets to shrubs and hence shrubs photosynthesis is reduced.
The removal of one seral stage to another is called ecological succession.
The place which is used by the shrubs is now used by the tree and give the competition for the land. The development of the two types of forest has negatively affected the populations of shrubs by decreasing the amount of space available for shrubs.
The development of the two types of forest has negatively affected the populations of shrubs by decreasing the amount of space available for shrubs because pine and hardwood are huge trees bigger than shrubs and occupy space.
As they occupy space they received most of the sunlight, their roots are very extensive and draw water and nutrients from the soil which makes these resources not very much available for shrubs, and hence it drastically affected the populations of shrubs.
Because of their heights, wideness, and big leaves, little sunlight gets to shrubs, and hence shrub's photosynthesis is reduced.
For more information, refer to the link:-
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Name three important needs for water
Answer:
for living beings to drink, to grow crops, a place for living for fishes and such
Answer:
For us to drink so we can survive, for fish to swim liek lakes and stuff , and so crops can grow
Explanation:
First correct answer gets Brainliest! Please answer!
(About Parkinson's Disease)
What gene is affected?
What kind of mutation is it?
Answer:
Parkinson disease is caused by mutations in the PARK7, SNCA, PINK1, PRKN, or LRRK2.
Explanation:
These are all genes that can be affected.
What type of cell is pictured to the right?
Hopefully I get a quick answer...
Answer:
This cell is a prokaryotic cell
Answer:
Prokaryotic
Explanation:
It has pili, the little hair looking things, on the outside. eukaryotic cells don't have that. also, if you don't believe me, search up prokaryotic cells, click on images, and this exact picture pops up.
27 AL 3+
13 how many protons, electrons and neutrons
PLEASE HELP (40 POINTS) What role might the processes of protein synthesis play in using CRISPR to modify a defective gene in an organism’s DNA? Do you think CRISPR and other forms of genetic engineering are helpful or harmful to humans?
Use what you know about protein synthesis to reflect on these questions.
Create a presentation of your ideas. Your presentation can be verbal, written, or drawn. Be sure to explain the reasoning behind your ideas. Be prepared to defend your ideas by considering a variety of different perspectives.
Answer:
That looks hard, search on google.
Explanation:
The area where two or more plates meet is called a: a.fault b.plate edge c.plate boundary d.ring of fire explain for every answer PLEASE I NEED THIS NOW IT IS DUE TODAY!!!!!!!!!!!!!!!!!!!!!!!
Answer:
I think the answer is C. Plate Boundary
Explanation:
Describe the structure of DNA from monomer to macromolecule.
Answer:
cells
Explanation:
In comparison to eukaryotic cells,most prokaryotic are very
A.mobile
B.complex
C.small
D.acid
Answer:
Hello!!! Princess Sakura here ^^
Explanation:
The answer is Choice C. They are way smaller than eukaryotic cells and most prokaryotic cells are bacteria and bacteria are really small.
Ecological success is valuable to understand, because it can change the biodiversity within an ecological community. Being able to teach a topic to a peer can demonstrate mastery! Explain the sequence of events that occur in secondary succession as you would to a friend who had not yet learned about the process.
Answer:
Secondary succession is a process in which a given area is disturbed, being re-colonized by other organisms following this process.
Explanation:
Secondary succession steps:
1- An area suffers a disturbance (e.g., fire, flood, earthquake, etc).
2-The process of disturbance destroys the food chain by removing primary producers (e.g., plants)
3- The vegetation grows back (i.e., first grasses and after higher trees). This process is known as recolonization
The secondary succession can regenerate an ecosystem in less than 50 years after disturbance. The first species re-established during secondary succession are the animals capable of living in disturbed habitats.
Secondary succession refers to the re-grow of species and the establishment of new ones in areas where a perturbation occurred leaving fertile good soil.
---------------------------------
Succession is a term used to refer to colonization and subsequent changes.
Colonization drives the establishment of individuals, populations, species, or bigger groups in areas where they were absent before.
When talking about succession, we refer to changes produced in the composition and structure of communities after a perturbation.
When a perturbation occurs -like fires, floods, earthquakes- and removes part or all of the aerial vegetable life forms, we talk about secondary succession.
In secondary succession, after the perturbation occurrence, the soil remains good and fertile, carrying viable spores, seeds, and roots of surviving species.
With time these species emerge and re-grow, colonizing the area. Also, new species can arrive at the open space, establishing there for the first time.
So, step by step,
1) A perturbation must occur in a community.
2) The perturbation damages or eliminates aerial parts of vegetable species. But the soil, which remains fertile, managed to protect seeds, spores, and roots of the species that used to live in these areas.
3) With time, these species regrow, and new species arrive in the area.
4) A new community emerges.
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You can learn more about secondary succession at
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1: Is Water the most important molecule on
earth? Answer with : claim , evidence and reasoning
Answer:
Yes, we need it to survive, also its in air, we wouldn't be able to breath without it. But most importantly we need to drink to survive
In general, what is photosynthesis?
Answer:
Photosynthesis is when plants use the sun to create sugars, which are like food to the plant.
Explanation:
what are the limitations of the respiratory system?
Answer:
Having gills, or the ability of gills.
Explanation:
Our lungs can't filter out water and use the oxygen in the water, sadly.
And, we can't hold our breath for that long, compared to other mammals (the only way that we can hold our breath for a long time is if we breathe in pure oxygen).
Why do you think the H-bonds only last a short time before breaking and reforming?
Answer: The room temperature thermal energy is about 2.5 KJ/mol, where areas hydrogen bond energy is in the range of 6-15 KJ/mol. So it must not only for thermal fluctuations. (please be specific with reference)
Explanation:
What evidence do similarities between fossil bones and modern organisms provide?
Answer:
It provides evidence for evolution and adaptations
Explanation:
define bicarpellary
Answer: adjective. Botany (of an ovary) having two carpells.
Please help need this today need 10 safety’s violations
Answer:
goggles not being worn, hair not pulled back, getting off task, puddle on floor, not paying attention
Explanation:
there is five, I could not find 10, but I hope this helps.
answer fast pls!!
All chemical equations must be balanced. This means that the same number of atoms
of each of the elements must be found in both the reactants and the products of the reaction. Which scientific law does this illustrate?
Law of Reflection
Law of Conservation of Energy
Law of Conservation of Mass
Law of Superposition
Answer:
The Law of Conservation of Mass.
Explanation:
The reasoning behind this is that when the chemical equation is balanced, so is the amount of mass. We make sure that the chemical equation is balanced to ensure that the law of conservation of mass is conserved. This is why we add coefficients to the beginning of reactants and products to make sure that the mass of the reactants combined is the same amount of mass of the products combined.
Answer:
The Law of Conservation of Mass!
Explanation:
PLS HELP I’M TIMED
The diagram below shows a battery and three light bulbs that are connected to an electric wire.
If one of the light bulbs is removed, then the remaining bulbs will
O A receive too much current and go out.
OB. get brighter.
OC explode.
D. receive no current and go out.
Answer:
If all bulbs are connected through a single wire, (or connected to each other throught a single wire then to the battery) then if one is removed the rest will receive no current and go out.
Explanation:
what is the median and mode
Answer:
Median is the average and mode is the same value
Explanation:
Which of these gases is not considered a greenhouse gas?
A. Nitrogen
B. Nitrous Oxide
C. Carbon monoxide
D. Dichloromethane
Answer:
C. Carbon monoxide
Explanation:
Carbon monoxide doesn't directly affect the climate directly, it absorbs & increases the impact of greenhouse gases.
