Nhóm nước giàu nhưng trình độ phát triển kinh tế xã hội chưa cao, đặc điểm phát triển kinh tế: A. Dựa vào sự phát triển dịch vụ.

B. Dựa vào nguồn tài nguyên phong phú.

C. Dựa vào sự phát triển nông nghiệp

D. Dựa vào sự phát triển công nghiệp

Where does the availability of water pose the greatest problem

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

[fw.02]diana is studying four surface features of florida. she classifies the surface features and places them in different columns of a chart as shown below. surface features column 1 column 2 hot springs sinkholes caverns geysers which of these titles best represents column 1 of diana's chart? formed by freezing groundwater o formed by heating groundwater o formed by evaporation of groundwater o formed by chemical action of groundwater