Answer:
c
Explanation:
It cant be a because of plants
it cant be b because it just dont make sense
it cant be d because you can see non living too
C. China is aging because of its one child per family policy
<span>Canada is slightly larger than the US. However, the US is about half the size of Russia; about three-tenths the size of Africa; about half the size of South America (or slightly larger than Brazil); slightly larger than China; more than twice the size of the European Union. temperature in canada </span><span>varies from temperate in south to subarctic and arctic in north. for the US <span>mostly temperate, but tropical in Hawaii and Florida, arctic in Alaska, semiarid in the great plains west of the Mississippi River, and arid in the Great Basin of the southwest; low winter temperatures in the northwest are ameliorated occasionally in January and February by warm chinook winds from the eastern slopes of the Rocky Mountains</span></span>
Explanation:
sedimentation and metamorphism