2. Which of the following is NOT a necessary input for the process of photosynthesis? A. CO2, (carbon dioxide)
B. Sunlight
C. H20 (water)
D. 02 (oxygen)

Need an answer asap 45 points and brainlest to the first person to answer why do scientific theories, such as biological and chemical evolution, represent the strongest explanation of the changes observed in the fossil record. must be in sentence form how can scientific theories on evolution and the fossil record change over time? must be in sentence form

Can a trait be both polygenic and have multiple alleles? explain why or why not.

Agene editing technology called crispr-cas9 uses cellular machinery to change the cell's genetic material. how might this technology be useful in treating diseases like cancer?