Which of the following is one of the chemical building blocks of cells?
a. water
c. air
b. food
d. carbohydrates

Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic

The process of meiosis produces only gametes, eggs or sperm. according to the diagram, how many sperm are formed from each cell that undergoes meiosis?