I'm Katie, can someone help me? will mark brainliest In a negative feedback loop, the initial signal is: Question 15 options:

remains unchanged

canceled out

amplified to a climax

1. the is the thinnest part of the earth. 2. the is the thickest part of the earth. 3. what metals are mentioned in the text?

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 kind of crystalline solid is graphite? o a. molecular solid b. metallic solid o c. network solid d. ionic solid