Why does the troposphere vary in thickness? A. Water vapor weighs down troposphere and less water vapor cause it to rise higher.
B. Warmer air dissipates into the stratosphere. Cooler air is trapped in the troposphere.
C. Cooler air contracts lowering the height, warmer air expands raising the altitude.
D. Air turbulence in the troposphere varies the altitude.

In what layer of the sun is energy transfers between atoms

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.

The serengeti plains are part of the african savanna ecosystem and are home to a variety of different species of plants and animals. the serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. which type of limiting factors does the seasonal drought in the serengeti plains affect?