When we think of respiration we usually think of inhaling oxygen and exhaling carbon dioxide. Assuming that all of the CO we exhale is waste from cellular respiration, how
does the carbon atom in CO2 enter the body?

Asnail, elodea (aquatic plant), or both were added to the tubes and they were stoppered. tubes were placed under a grow light for 24 hours and the results recorded. the test tubes were then covered for 24 hours to produce a dark environment and the results recorded. which statement best explains the change in test tube d from the light setup to the dark setup.

The galapagos island contain 13 species of finches four of the species are seen here it is believed that all of the species had one common ancestor and overtime

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.