A gradual increase in the average temperature of Earth's atmosphere and its oceans is g_____ w_____.
global warming
A marine reserve, such as coral reefs, protects o_____ l_____.
ocean life
The burning of f_____ f____ for electricity and heat produces g_____ g_____.
fossil fuels / greenhouse gases
Reducing our use of fossil fuels is critical; one solution is to invest in r____ e____ s____, like geothermal, solar, and wind power.
renewable energy sources
Global warming leads to c_______c____.
climate change
Fossil fuel use causes g______g____
greenhouse gases
Melting polar ice caps leads to the rising______.
sea levels
People need to invest in renewable energy resources because of the decreasing amounts of n_____r____.
natural resources
The sea turtle is an e_______s_______.
endangered species.
C_____r_____are homes of a lot of s_____ c_____.
coral reefs / sea creatures
Solar energy is a r_____ e_____ s_____.
renewable energy source
