Refers to the average increase in the earth's temperature, which causes changes in climate.
a. climate change
b. the ozone melt
c. global warming
d. the greenhouse effect

The mantle is made up of which structural zones?

Rainbow trout is non- native to the united states. however this species is breeding with the native gula yltrout acientistrecently observed that the hola trout were becoming exitinct what is the cause of their extinction

The vegetation that thrives in the tundra is limited to a. mosses, barley, wheat, and corn. b. coniferous trees. c. dwarf shrubs, mosses, lichen, potatoes, and beans. d. mosses, lichen, algae, and dwarf shrubs.