Answer:
Ideally, the experimental and control groups are identical. As much as possible, the two groups should overlap in every characteristic.
Explanation:
At the beginning of your study, you need your two groups to be as statistically similar as is humanly possible. That way, when you control for other variables, you can reasonably attribute any statistically significant differences at the end of the study to your intervention.
A giraffe often has to to be aware of its surroundings since they could get ambushed by a predator thats why they mostly stay in pairs or groups
RNA stands for ribonucleic acid. It's primary function is to make ribosomes, hence the answer is 'a'
Answer:
Trophic level
Explanation:
A trophic level is each step in a food chain that demonstrates the transfer of energy.
