Which of the following is a product of photosynthesis ?

a. water
b. oxygen
c. carbon dioxide
d. sunlight

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important

Study this image which statement best describes the rock shown check all that apply

Select the correct answer from each drop-down menu proteins are