Which of the following is not usually an effect of increased agricultural yields within a society?

In a economy individuals answer the three basic and the central authority or leaders have little say in the economy.

How do oceanographers measure the salinity of ocean water?

Impressions of tropical swamp plants were observed on rocks in polar regions. the impressions were dark black imprints, which means the fossils are examples of ( 1 ) the fossils tell us that polar regions ( 2 ) ( 1 ) a. carbonization b. mineralization c. trace fossils ( 2 ) a. had tropical plants that can grow in ice b. might have had a diffierent climate in the past c. will have abundent vegitation