Smoke and Fog

Greatest threat to our planet

Cutting down trees and other vegetation in a patch of forest, leaving the cut vegetation on the ground to dry, and then burning it.

Single identifiable source that discharges pollutants into the environment.

Total kinetic energy of all the randomly moving atoms, ions, or molecules within a given substance, excluding the overall motion of the whole object.

Large or dispersed land areas such as cropfields, streets, and lawns that discharge pollutants into the environment over a large area.

Any food, element, or compound an organism must take in to live, grow, or reproduce.

Species that play roles affecting many other organisms in an ecosystem.

Removal of trees from a forested area without adequate replanting

The time it takes for the quantity of something growing exponentially to double

Doubling Time can be calculated by dividing the annual percentage growth rate into what?

The Earth's population

The number of species already identified by biologists is approximately

Fossil fuels and minerals are found in the

An ecosystem can survive without

The phosphorous cycle is an example of

Measure of how harmful a substance is

Planting regular crops and close-growing plants in alternating rows to help reduce depletion of soil nutrients

A transitional zone between two ecosystems is called

The greatest teacher ever