Precizati :
-5 fluvi importante din europa
-4 fluvi africa
-3 fluvi america n
-3 fluvi america s
-5 fluvi asia

Which statement describes why the us forest service is important a-it protects ecosystems, supervises public access of lands, and manages wilderness areas. b-it supervises public access of lands, manages wilderness areas, and enforces federal wildlife laws. c- it manages wilderness areas, enforces federal wildlife laws, and foreign governments with international conservation efforts. d- it enforces federal wildlife laws, foreign governments with international conservation efforts, and protects ecosystems.

A, as , to a , as a , is as a. b. c. d.

Which factors add to the greenhouse effect and are caused by human activities?