Answer:
If there is a disaster a disaster system management system would be effective in organizing groups to help clean up, seek help, and look for survivors.
Answer:
internal migration: moving within a state, country, or continent.
external migration: moving to a different state, country, or continent.
Explanation:
The development of ozone, oxygen, and cyanobacteria factored in the development of complex organisms. The cyanobacteria or also called blue-green algae are microbes use the sunshine, water and carbon dioxide to conduct photosynthesis and produce carbohydrates oxygen.
This great oxidation event changed the Earth and life on Earth forever.
The Salish sea in western North America is one of the marginal seas of the Pacific Ocean.
Answer:
B) People who live in a particular area