Answer:
Mediterranean ecosystems of southern California are some of the most ecologically diverse systems outside of the tropics. The richness and diversity of plants and animals, as well as high rates of endemism, make the area a biodiversity hotspot
Explanation:
They all form in great clouds of gas and dust, they begin life with same chemical composition as the Sun: about 3/4 hydrogen and 1/4 helium and no more than 2% consisting of elements heavier than helium. They DIFFER in size, age brightness, and temperature.
Answer:
true
Explanation:
Chlorofluorocarbons or CFCs are the main cause of ozone layer depletion. These are released by solvents, spray aerosols, refrigerators, air-conditioners, etc. The molecules of chlorofluorocarbons in the stratosphere are broken down by the ultraviolet radiations and release chlorine atoms.
