........ ......... is a rain that has turned toxic due to certain pollutants in the air.
Acid rain
........ .......... is a type of organism that is threatened by extinction.
Endangered species
Non-renewable energy sources such as coal, natural gas, oil. These fuels originate from plants and animals that existed in the past
Fossil fuels
....... ..........the gas that is produced when the engine of a vehicle is running.
Exhaust fumes
....... ........ is the long-term warming of the planet's overall temperature
Global warming
....... .......a process that occurs when gases in Earth's atmosphere trap the Sun's heat.
Greenhouse effect
When plants or animals experience a change in their natural environment that means they cannot access food, water, or shelter as they normally would.
Habitat loss
....... .......is the common term for the high concentration of ozone that is found in the stratosphere around 15–30km above the earth's surface.
Ozone layer
energy that comes from a source that won't run out. Examples include wind power, solar power, bioenergy.
Renewable energy
The geological process in which earthen materials are worn away and transported by natural forces such as wind or water.
Soil erosion
The unwanted poisonous by-products of human activity
Toxic waste
The release of pollutants into the air from cars, trucks, and buses, which contributes significantly to air pollution.
Vehicle emissions
The lack of fresh water for drinking and agriculture.
Water scarcity
A device that converts the kinetic energy of wind into electrical energy.
Wind turbine
