If a tree has 10 dark rings and 10 light rings, how old is the tree? A 5 years
B 2 years
C 20 years
D 10 years

Why are nongovernmental organizations important? check all that applya. they are private institutions that aid the work of government. b. they often fill in gaps between government-funded services. c. they are private institutions that attack government policyd. they citizens by acting as watch dogs over elected officials

Which age groups shows the graestest diferrence between males and females

In the late 1990s, brazil’s poor people protested about crowded cities land distribution mining permits industrial pollution