A threat to the environment is something that…
protects nature
causes harm
Dealing with climate change can be very _____, because it requires time, money, and effort.
vital
unprecedented
taxing
viable
Contamination refers to…
protecting animals from danger
making something dirty or unsafe
cleaning something very carefully
building new houses
A pollutant is…
something that is safe for plants
something that creates more energy
something that helps clean the water
something that damages the environment
A pervasive problem is one that exists only in one small place.
False
True
Erosion happens when…
rivers get polluted
the earth dries up and plants die
animals move to a new area
soil or rock is worn away
Large areas of forest are disappearing because of _____, often caused by farming and logging.
emission
strain
deforestation
erosion
Something devastating is…
extremely harmful
easy to repair
useful for the environment
slightly beneficial
Water is vital for life, which means it is…
optional
important
Emission is best defined as…
reducing waste
planting large numbers of trees
releasing endangered animals
gas or pollution in the air
Unprecedented means…
very easy to predict
never seen before
slow and gradual
extremely common to see
If a city’s water supply is under strain, it means…
the water level is rising
the city has too much water
the water is clean
the system is struggling
Cutting down ancient forests causes _____ damage that cannot be undone.
sustainable
vital
viable
irreversible
Farmers often use _____ to help crops grow faster.
threats
pollutants
emissions
fertilizers
A healthy _____ includes plants, animals, bacteria, and their natural environment.
pollutant
ecosystem
fertilizer
erosion
Scientists are searching for _____ solutions that can realistically help solve water shortages.
devastating
chronic
pervasive
viable
Inevitably means something that...
arrives without warning
cannot be avoided
happens by accident
Air pollution can lead to _____ health problems that last for years.
chronic
vital
viable
sustainable
If temperatures continue to rise _____, climate change will speed up even more.
devastatingly
sustainably
inexorably
Sustainable actions are those that…
use up all resources quickly
destroy natural habitats
work only for a short time
are not harmful