Answer:
Pollution
Explanation:
The heat changes in the temperature in a lake is a form of pollution. When a factory uses water to cool down its machines, the organisms in that lake may not survive in the sudden temperature change. Adding to this, other organisms similar to algae begin to thrive. They cause the water to turn green, and the lake to stink. This is an environmental/biological example of pollution. (Brainliest please?)
