What is the most important era in which mammals appeared ? O Cenozoic
O Mesozoic
O Paleozoic
O Precambrian

Using examples from various part of the world that is countries, examine the assertion that mere presence of abundant natural resources in a country does not guarantee rapid socio economic development?

How might the effects of el niño impact forests in the united states? a) it could cause hurricanes that would destroy forests in oregon. b) it could cause droughts which would make forest fires more likely. c) it could cause an increase in mold that could kill large amounts of trees. d) it could cause an increase in the length of the wet, rainy seasons in the northwest.

How is desertification affecting the sahel? a. it causes the land easier to farmb. it causes the land to become more aridc. it causes the formation of lakes and pondsd. it causes more people to move to the area.