is for Aquaculture

This is also called "fish farming," where fish can be raised in lakes, ponds, or other environments and used as food for humans.

is for Biome

Biomes are areas that have similar weather and plant life. The tropical rain forest, savannah, and arctic tundra are all types of biomes!

is for Climate

Climate is the typical weather conditions in a place over at least 30 years to even thousands of years.

is for Desert

Did you know that there are different types of deserts? Some are called tropical deserts, and and hot and dry all year with very few plants. Others, called temperate deserts, are hot in the summer and cool in the winter. Cold deserts have very little rainfall and are actually cold during much of the year!

is for Erosion

Erosion occurs when a material such as soil is worn away from its home and moved to another place by a substance such as water. This can be harmful to a natural place that needs a lot of soil.

is for Fossil Fuels

Fuels made out of the remains of plants and animals, such as coal, crude oil or natural gas, are used to provide us with electricity and car fuel. Using too many fossil fuels can add harmful chemicals into the air that we breathe, and make it unsafe to live in parts of the world.

is for Groundwater

When it rains or snows, the water that eventually reaches the ground can sink into soil and form layers of water underground. This is known as groundwater, and is an important source of water for people across the world.

is for Horizons

These are the layers that make up soil on Earth: the highest layers are closest to the trees and houses, and are called the O and A horizons. Sometimes you can see each separate layer, but other times they seem like they are all combined together.

is for Igneous Rock

This type of rock forms under the surface of Earth, and heat and pressure force hot magma to come up to the surface to cool and harden. You might have seen granite on your kitchen counter, or lava rock on an island with a volcano. These are types of igneous rocks!

Granite

Lava Rock

is for Jet Stream

Jet streams are flows of air that move around very quickly and effect weather conditions all around the planet. For example, a jet stream can cause a rain storm to stay in a certain place for days at a time, or for a snow shower to pass through very quickly!

is for Kenaf

This is a plant that grows very quickly and is used to create paper without materials from trees. It allows us to save our tree species from being cut down and turned into paper. Kenaf needs fewer chemicals to grow, and can make more paper than trees with the same amount of material!

is for Limiting Factor

Sometimes a certain thing will limit growth of a population of a species. These limiting factors, such as a very hot temperature or a lack of fresh water, can determine the number of organisms in a population.

is for Metamorphic Rock

This type of rock forms when existing rocks face very hot temperatures, high pressures, or chemicals. These forces change the rock into a new metamorphic rock such as slate.

is for Natural Resources

These are natural materials that humans use to survive. Some natural resources can be remade (or are called renewable) over time, such as energy from the sun and wind, while others such as oil are called nonrenewable and are cannot be replaced once they are used up.

is for Oligotrophic Lakes

This is a type of lake that is very deep with clear water. This isn't always a good thing, though- oligotrophic lakes usually don't have very many important nutrients to help animals survive there.

is for Point Source Pollution

When a pollutant is released from one specific place and causes damage to the air or water around that place, it is known as point source pollution. Places such as a factory that emits chemicals out of a smokestack are common locations of point source pollution.