True because excretory is like sweat and you sweat through your skin- more specifically the pores in your skin
Answer:
To reduce systematic error.
Explanation:
The researchers would have used random allocation in order to decreases systematic error in the experiment. If we don't apply random allocation to the experiment, there is high chances of systematic error in the experiment and the result is not of high quality. Independent variables is a type of variable whose variation does not depend on another factor while on the other hand, dependent variables is a type of variable whose variation depend on another factor.
Answer:
they are energetic and they are joyful
Answer:
Hypotheses about the origins of life
