The attraction of water to other substances other than water is known as

The rate at which molecules water and oxygen can enter a cell is determined by the-

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

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