Inorganic carbon that dissolves in the ocean from the atmosphere is converted into organic compounds by A. buffering
B. cellular respiration
C. Photosynthesis
D. sedimentation

Aresearcher has developed two stains for use with seed plants. one stains sporophyte tissue blue; the other stains gametophyte tissue red. if the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur? a) the pollen grains will be pure red.b) the pollen grains will be pure blue.c) the pollen grains will have red interiors and blue exteriors.d) the pollen grains will have blue interiors and red exteriors.

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

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