How important was hooke's homemade microscope to the discovery of the plant cell?

Which member of the following food chain will be least affected by ddt, a pesticide water pollutant, if bio-magnification is occurring? algae> zooplankton> crayfish> leopard frog> large mouth bass

What is responsible for the uneven heating between the poles and the equator on any given day

What factors contribute to the effect an environmental toxin has on the human body?