Convection currents that cycle between the equator and 30 degrees North and South

Two main climate characteristics used to classify terrestrial biomes; they greatly influence plant growth

When DNA is copied during cell growth or division, a random "mistake" can occur resulting in this

Of all the water, this is the percent of freshwater on Earth

The process by which plants and trees create sugars from carbon dioxide and water

Percentage of sunlight that is reflected from the Earth's surface

Soil in the Tundra is generally low in nutrients with a lot of remaining organic material due to the slowing of this process (because it is cold).

The ability of an individual to survive and reproduce is considered this in terms of genetics

77.28% of freshwater on Earth is held in this

Tree stems per square meter is the unit of this measurement

Deflection of object's path due to the rotation of the Earth; Also contributes to the direction of major wind patterns

This biome receives the most rainfall of all biomes and is located near the equator

Breeds of horses, cattle, and even dogs have been produced by this form of evolution

The process by which water moves through soil

This is a factor that might influence soil moisture

This is created when humid air blowing inland from oceans meets a mountain range and deposits water on the ocean side

Cold and treeless, this biome has a very short growing season and receives very little rain

Process of evolution in which environmental conditions influence/determine which species survive and reproduce

Groundwater that exists in small spaces within permeable layers of rock and sediment

A piece of field equipment used to measure canopy cover.

Variation in the amount of surface area over which the sun's rays are distributed cause this in temperate regions

This biome, located just south of the Boreal Forest, has cold winters and warm summers and slightly higher soil nutrients due to the abundance of leaves from deciduous trees

If a population experiences a drastic reduction in population size, the genetic composition of the survivors may differ dramatically from the original population as a result of this random evolutionary process

This may LOWER when a well draws too much ground water

The angle the hillside faces