In the recent past, what has made controlling malaria in Sierra Leone so difficult?

How long does it take neptune to orbit the sun?

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

Witch of the following volcano hazards is made up of rocky particles about the size of a grain of sand