On the top of a high mountain, air pressure is significantly lower than at sea level, so there is less O2 in a given volume of air. Suppose a person at high altitude maintained the same rate and depth of breathing as he had at sea level. What would happen to the O2 levels in his blood? Explain your reasoning, using the vocabulary: breathing rate, oxygen, lungs, blood.

The diagram shows a fossil of an ancient whale skull and a skull of a present-day whale. the ancient whale is extinct and is believed to be an ancestor of the present-day whale. what do these skulls most likely show that supports darwin’s theory of evolution? all populations can adapt and survive. only some organisms have a common ancestor. populations change slowly over time. populations rapidly become extinct.

What are the three types of counseling established by marine corps policy?

Which of the following is not a potential result of deforestation?