Using the four components of natural selection, explain how PCB resistance became so common among the tomcod in the Hudson. Be sure to state yourclaim, provide
evidence from prior knowledge, and justify your reasoning.

Explain why in any given geographical region, women tend to have lighter skins( by 3-4% on average) than men?

Research cheetahs on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? -cheetah how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.

Food contains a sugar called ( ), which is broken down in a process called cellular ( ). this process uses ( ) to break down food molecules and provide energy for cells. fill in the parentheses