Answer:
The axonal membrane (place as brainliest so others know its correct)
Answer:
i think C
Explanation:
Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.
Answer:
Low concentration to high concentration
Explanation:
If moving up the concentration gradient, you will start detecting the chemical molecules more and more frequently.
A diagram of the sequence of movements or actions of people or things involved in a complex system or activity.