Structure and support ,storage area for the nutrients ,and also having a place where waste matter can decompose
Answer:
In animal field studies, why do scientists usually try to work without making the animals aware that the humans are present? It is necessary to observe the animals without disturbing them. When a controlled experiment is not possible, why do scientists try to identify as many relevant variables as possible?
A sounds correct
Please vote answer branliest! Thanks.
I got C. it is a homogenous mixture and particles settle down if left undisturbed.
