Answer:The largest biome in North America is <u><em>A, the Tundra.</em></u><em> </em>
Explanation: In North America, there are a total of 6 biomes. The largest Tundra is located in the Rocky Mountains in Colorado. The Coniferous Forest (Taiga) is the 2nd largest biome that is located in North America. The other biomes in North America are grassland, deciduous forest, desert, and the tropical rain forest.
Answer: The entire food web
Explanation: Because the small fish eat the plankton and the birds eat the fish, and other things eat the birds etc. etc., technically if the number of phytoplankton and vegetation dropped, it would cause everyone else to have a lack of food
Answer:
Glucose entering the intestines from the villus.This is by active transport.The latter is defined as the movement of molecules and solutes from the region of lower concentration to the region of higher concentration against the concentration gradient.
Explanation:
All the above options depends on the diffusion gradients from one higher region to another.e.g oxygen passing from high concentration from outside to lower concentration in blood stream,like wise Co2 from higher concentration from inside to outside,with passive diffusion lipids and water enter the small intestine(note amino acid and glucose,and fructose are different).
Active transport( through sodium dependent transporter) transports glucose to the intestine from the villus.This is movements against concentration gradient because,glucose molecule are concentrated in intestine,and needed by the cells, in the body.Therefore they must be transported as a fast rate inn the blood .
However the absorption by the villi is very slow,therefore active transport is needed to move these against the concentration gradient into the intestine.And finally the blood.
If this were to be moved by passive diffusion,the high concentration in the intestine will force this back into the villi
Therefore extra energy is needed by active transport for the glucose molecules to enter the intestine from the villus.
Answer:
<h2>Car</h2>
Explanation:
Carbon dioxide is a type of colorless gas that is present in the atmosphere in a very trace amount. This gas plays an important role in the process of photosynthesis that occurs in green plants. There are many sources that increase the percentage of carbon dioxide in the atmosphere that has an adverse effect on nature and causes global warming. Car, trucks and many other machines are responsible for the production of carbon dioxide gases directly or indirectly.