The main concept of cell theory is that cells are the basic structural unit for all organisms. ... Living things may be single-celled or they may be very complex such as a human being. ... Cells hold a variety of pieces and each cell type has a different purpose. ... The trillions of cells in your body make your way of life possible.
Primitive Plant is an example of a plant group where the male gametes depend on moisture to swim towards the ovum.
Answer: The environment might affect the population, because there might be more predators in one area compared to another