How would one calculate the power emitted by the Sun? What is this value?

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 molecules does hemoglobin decay into over time

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm