When a fresh, uncooked beef roast is sliced in two, the surface of the meat first appears purplish but then turns red. Explain why. The change in color of freshly cut meat is due to myoglobin oxygen.

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

The grooves or folds of the brain are called

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.