Alex sold 330 candy bars to raise money for his community basketball league. milk chocolate candy bars sold for $2 each, and white chocolate candy bars sold for $3 each. alex sold $900 worth of candy bars.

how many white chocolate candy bars did alex sell?

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How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

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

What is the primary goal of human communities?