Why do objects in our solar system orbit the sun? a. because of gravitational force
b. because of their composition
c. because of their shape
d. because of their electromagnetic force

Classify the structures as homologous or analogous, depending on their structure and function.

Which muscle is responsible for inhalation ?

Agroup of plant cells was exposed to radiation, which damaged the chloroplasts and caused them to lose function. if the mitochondria were unharmed, what would happen to the overall function of the plant cells? a. the cells would not be able to make food, but would be able to release energy from biomolecules. b. the cells would not be able to replicate dna, but would be able to break down waste. c. the cells would not be able to break down waste, but would be able to replicate dna. d. the cells would not be able to release energy from biomolecules, but would be able to make food.