Effects of Humans on Ecosystems Crossword

What is one possible source of excess phosphorus in aquatic ecosystems?
A process in which materials,especially toxins,are ingested by an organism at rate greater then they are eliminated.
The increase in the concentration of a toxin as it moves from one trophic level to the next.
The total mass of living organisms in a defined group or area
Example of an action you could take to reduce the amount of carbon dioxide being released by the burning of fossil fuels.
A process in which nutrient levels in aquatic ecosystems increase,leading to an increase in the populations of primary producers.
The waming of earth as a result of greenhouse gases,which trap some of the energy that would otherwise leave earth.
An atmospheric gas that prevents heat from leaving the atmosphere,thus increasing the temperature of the atmosphere.
Which nutrient was found to be the main cause of eutrophication in northern Ontario lakes?
A measure of the amount of energy transferred from one trophic level to the next higher trophic level
A category of organisms that is defined by how the organisms gain their energy.