<span>Carbon dioxide, a waste product of
metabolism, travels from the blood to the alveoli, where it can be
exhaled. Between the alveoli is a thin layer of cells called the
interstitium, which contains blood vessels and cells that help support
the alveoli.</span>
The answer is either B or D. Letter A doesn't make sense and letter C isn't right either because you need rainfall to have fertile plains.
I do not think so. what other technology could we use.
Very acuratley, once the rate of birth, mortality rate, and infant mortality rate are taken into perspective.
Answer:
This is because despite being the largest city in the country, New York City only has around 6% of the total U.S. population when its metropolitan area is taken into account.
A primate city, on the contrary, is a city that has 20%, 30% or even 40% of the total population of the country, regardless of how much larger it is than the second city.