The fastest nerve signals travel at speeds that exceed 100 meters per second :)
<span>Dalton improved the atomic theory by establishing that elements are made of atoms & that all atoms of an element are identical.</span>
A graphical model of energy flow is an energy pyramid; The steps of the energy flow are
Producers: Green plants store solar energy as chemical energy after it being converted by photosynthesis.
Consumers: The are unable to produce food, they live on food produced by green plants.
Decomposers: some bacteria and molds break down the dead bodies of plants and animals step by step and turn them into simpler substances of dead plants and animals.