<span>Protozoa mostly divide by the process of binary fission. This is a asexual mode of reproduction. One protozoan cell divides into similar daughter cells. Thus, after several rouds of divison, multiple cells are formed. Some species are also known to divide by multiple asexual divisions.</span>
A tree is not an isolated system. It gets nutrients from surrounding environment to grow and build its mass. A total mass of tree plus its environment is constant.
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Concentrations of this toxin are found in the ant as well as in the lizard and the bird, as they are part of the same food chain. The lizard eats ants and the bird eats the lizard. This phenomenon is called biomagnification.
Biomagnification refers to the cumulative increase in concentrations of a persistent substance as one moves up the food chain (trophic chain).
Biomagnification is therefore a process in which the concentration of a substance present in a biotope increases throughout a food chain; by extension, the result of this process.
