In what type of organism is cell differentiation necessary?
A. prokaryotes
B. kingdom archaebacteria
C. single-celled organisms
D. multi-cellular organisms

To sciences do not agree on which type of grocery bag is better for the environment what is most likely to come out come out of the disagreement

What is responsible for the uneven heating between the poles and the equator on any given day

Which of these would most likely be a stimulus that would cause the body to initiate feedback mechanisms a.) normal body temperature in an arctic environment b.) normal boy temperature in a tropical environment c.)light physical activity d.)low blood sugar