-In Africa savanna more wildebeest are born than the environment can support. As a result over a period of years individuals that are well suited to the environment reproduce, and those that have lesser adaptations die before they reproduce. This is referred to as natural selection.
Answer:
very very .. tiny tiny tiny organisms
Multicellular organisms grow by producing more cells. As children, we get taller every year. That growth happens only because our bodies keep adding new cells. A sapling becomes a tree for the same reason.
But even after an organism grows up, its cells continue to divide. That's because cells wear out or get damaged.
Read more: Life Cycle of a Cell - Replacing Cells, Cell Division, Growth and Repair:, Mitosis, Specialized Sex Cells, Meiosis, Plant Sex Cells
All plant and animal groups existing together and the physical factors with which they interact compose an ecosystem<span>.</span>
