Question

Cyanobacteria produce _______ from nitrogen gas as part of the nitrogen cycle.

Only about _______ percent of Earth's water is available to be consumed by humans or used for agriculture.

Animals can't consume nitrates directly. They must obtain nitrogen by _______ plants or other herbivore animals.

_______ from forest fires and volcanoes, as well as the decay of dead plants and animals, causes a type of pollution from carbon oxides.

One of the primary reasons that freshwater is unevenly distributed around the world is due to variation in amounts of _______.

Respond to the following based on your reading.
What is the biggest problem with desalination?

Answer 1

Cyanobacteria produce nitrogen compounds from nitrogen gas as part of the nitrogen cycle.

Only about 0.5 to 2.5 percent of Earth's water is available to be consumed by humans or used for agriculture.

Animals can't consume nitrates directly. They must obtain nitrogen by eating plants or other herbivore animals.

Emissions from forest fires and volcanoes, as well as the decay of dead plants and animals, causes a type of pollution from carbon oxides.

One of the primary reasons that freshwater is unevenly distributed around the world is due to variation in amounts of precipitation.

The biggest problem with desalination is its high energy consumption and cost, which make it an expensive option for producing freshwater, as well as its potential environmental impacts, such as the disposal of brine waste.