What does a S-shaped curve demonstrate for population growth? Give an example of a population that shows a S-shaped growth
pattern.

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

Bio molecules are essential to all living things. which biomolecule is “d” from the table

Where does the esophagus lead to in a frog?