The predominant gas in the earth's atmosphere is

a.
helium

b.
oxygen

c.
methane

d.
water vapor

e.
nitrogen

within these regions are all the major types of biomes in the world. a biome is a community of animals and plants spreading over an extensive area with a relatively uniform climate. some diverse biomes represented in north america include desert, grassland, tundra, and coral reefs.

answer biscay bay;