Answer:
True
- Competition exclusion does controls population size.
Independent: The second group is not given the drug.
Dependent: Dr. Smith wants to examine weather a new drug increases the maze running performance of older rats.
Constants: Dr. Smith teaches two groups of older rats to find a piece of tasty rat chow in the maze.
Answer:
The solute moves against the concentration gradient. (Ans. C)
Explanation:
Active transport: In this transport a substance moves against a concentration gradient. Active transport mechanism expending the energy to maintain ions or molecules right concentration in living cells. Active transport basically divided into two types:
1) Primary active transport: In which for the movement of ions across the membrane against their gradient they use directly a source of chemical energy from ATP. Example of active transport is sodium potassium pump.
2) Secondary active transport: It is also called as co-transport. They are using electrochemical gradient which is generated by active transport. In which for the movement of ions across the membrane against their gradient, and they don't require a source of chemical energy from ATP.
Answer:
I'm going to say grass
Explanation:
Didn't post food chain but grass is a very commonly used producer.
May i know the complete sentence?