Match the words to their correct meanings. a. immigrants \b. emigrants \c. population trend \d. natural increase

1changes in population over a period of time

2people who leave their native country

3people who come to live in a new country

4the difference between the birth and death rate

i i think it might b c

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.

99%

explanation:

i really need to know