Modern birds and lizards share a common ancestor that was an ectotherm. Which of the following explains the fact that lizards are also ectotherms but
birds evolved to become endotherms?
A. The difference is due to the fact that birds are more highly
evolved.
B. A recent random mutation could account for the change in birds.
C. A split occurred sometime in the past in response to different
environmental pressures.
D. Birds acquired the endothermy trait so they could improve their
own chances of survival.

Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? 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.

What are they five steps of cloning?

Math focus 4. calculate a map has index contours at 250 m, 500 m, and 750 m. what is the contour interval?