Think about the different ecosystems we would find while studying the physical geography of the United States. Which ecosystem do you live in? In a short paragraph, describe the ecosystem that surrounds you. What kinds of plants and
animals are common in your area?

a. it led to stricter immigration laws.

radiative zone

explanation    

radiative zone is the layer of the sun which energy is transferred away from the core by radiation. although, the core is the only part of the sun that produces an appreciable amount of heat through fusion. in fact, 99% of the energy produced by the sun takes place within 24% of the sun's radius.