Yes the four parts are called the geosphere, hydrosphere, atmosphere, and biosphere.
C) to protect landscapes and endangered species
The Sahara is a desert in Northern Africa, so the correct response is "Sahara".
<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>