Answer:
Independent Variable: Give one group the drug and dont give the other group the drug
Dependent Variable:The data of if the drug improves the rats memory(if their memory is better, the same, or made worse)
Answer: parallax is the best answer
The steeper the slope of the track the quicker the toy car will accelerate.
Answer:
Divergence
Explanation:
This happens because of the different genetic makeup or genotype of different individuals. The divergence mechanism occurs because of divergent evolution where in some cases random chances occurs and neurons became a source of stimulus for one but not other and vice versa.
First answer: 4
Second answer: I think 2?
Third answer: 5
Fourth answer: 1