III. Make a pyramid of the levels of biological organization with the correct word/s given inside the word box. Arrange them from smallest (at the top) to highest (bottom).

Organism Ecosystem Biosphere tissue

Cell Organ Community Population

Biome Organ System

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Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight. which of these is most likely effect on the ecosystem?

What would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time?