Which of these sources of energy have not acquired energy from sun? ?
a. petroleum
b. wind
c. coal

Select the situation bellow that would produce a total displacement of zero. a. a trip to the moon and then to mars b. a horse galloping from one end of a field to another c. the criss-crossing path of a bug as it flies from flower to flower d.a round-trip ride to school and back

What is a group of organisms that are closely related and share similar characteristics

Which organelle breaks down sugar molecules that supply energy to the cell ?