This is the amount of one species as compared with the total abundance of all species in a given area. it can also be used to describe isotopes in nature.

Which scientists contributed to the determination of how cfcs in clouds in the upper atmosphere could destroy ozone molecules

Which subatance is not soluble in water

Certain types of organisms such as fireflies and anglerfish can produce light through chemical reactions in a process called bioluminescence. what kind of chemical reactions occur during bioluminescence? o a) exothermic ob) endothermic oc) recomposition od) decomposition