Since the 1970s, many nations have entered into treaties to control the occurrence of acid rain, the thinning of the ozone layer, and the dumping of toxic waste into oceans. select the best answer from the choices provided. t f

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

In a constitutional monarchy, the king or queen a. is a symbol of the nation b. runs for office c. controls the legislative branch d. has absolute control

Which describes italy’s mediterranean climate? a. moist in the summer and dry in the winter b. mild and wet all year round c. cool in the summer and warm in the winter d. hot in the summer and mild in the winter