What is the major source of energy for muscles?
a. acetylcholine
b. calcium
c. glycogen
d. adenosine triphosphate

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

Which organelles are labeled d, and what is one feature that distinguishes them from the other labeled organelles chloroplasts the only organelles that produce sugars from sunlight mosomes, only found in animal and bacterial cells centricles only found in animal cells mitochondra, the only energo-generating structures found in cells

Match the description of each organism to the appropriate category