Which of the following could be best observed by looking at tombstones?

a. erosion

c. weathering

b. acid rain

d. sediment

Is the United States a developing country or a developed country? How can you tell?

What historically has had the greatest impact on the development of environmental policy? a. small-scale private environmental events b. large-scale public environmental events c. efforts of conservationists d. none of the above

What is convectional rainfall?

Saturn is more than ten times as far from the Sun as Venus is. true or false

Explain how o2 cycle through the ecosystem in which you live

Some 2.5 million people currently live in sahara, most of these in egypt, mauritania, morocco and algeria true or false

Compare the aquatic species mortality on the east and west coast

The political boundaries of North Africa and the Middle East can best be described as the product of which of the following processes? a. Devolutionb. Imperialismc. Self-determinationd. Democratisatione. Supranationalism

What happens when two oceanic plates collide? What negative impacts for human populations can result from this type of action?

A manufacturers producing 950 light bulb per day