Answer:
a. plants are preserved as fossils
Explanation:
Through the passing of time, the dead bodies like plants or animals rest in soil, and the cover by different particles, with the time they can be compressed and form a soil layer. If the environment condition changes they get caught in one soil layer. If this process is repeated constantly, so a new soil layer will be formed. So passing the time, different soil layers will have different animals or plants. With the help of isotopes, the scientist can determine the years of each layer.
Free-enterprise economy
A, B, and C will hurt an underdeveloped nation. D would help the nation strive into becoming an first would country. The question is asking what will not hurt an underdeveloped nation.
They are both contiinents in the western hemisphere.
They both have a few countries.
They both have mountains.
They both have deserts
1 is physical. Physical weathering is caused by the effects of changing temperature on rocks, causing the rock to break apart. The process is sometimes assisted by water. There are two main types which are freeze thawing and exfoliation. Physical weathering usually occurs in places where there is little soil and few plants growing like mountains, hot deserts, or tundras(the cold tundras).
Earth’s atmosphere traps heat from the sun, which makes Earth’s temperature suitable for living things.
