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Worksheets9.b. Eutrophication & Climate Change
Total questions: 12
Worksheet time: 6mins
Eutrophication is defined as a change that occurs to an aquatic ecosystem. This change is mainly due to what?
Newly introduced fish
Depletion of the ozone layer
Increased nutrient concentration
Increase in atmospheric carbon dioxide.
How fast has the Earth’s temperature risen in the last century?
1.2 to 1.4 degrees Fahrenheit
2.4 to 2.8 degrees Fahrenheit
.2 to .4 degrees Fahrenheit
12 to 14 degrees Fahrenheit
Which two are greenhouse gases.
Carbon and ethanol gas
Carbon monoxide and ethane gas
Carbon dioxide and methane gas
Nitrogen and hydrogen
What do climate models predict for our future?
Rising sea levels that will lead to coastal flooding
Less frequent hurricanes
Less extreme droughts
An increase in biodiversity
Which is the correct order of changes that occur during eutrophication?
Aquatic plants cannot photosynthesize and die. Algal blooms blocks light from entering lower levels of a pond or lake. The fish and other aquatic organisms die. The bacteria decompose the algae, and they use up a lot of oxygen during this process. The algae die.
Algal blooms blocks light from entering lower levels of a pond or lake. Aquatic plants cannot photosynthesize and die. The algae die. The fish and other aquatic organisms die. The bacteria decompose the algae, and they use up a lot of oxygen during this process.
Algal blooms blocks light from entering lower levels of a pond or lake. Aquatic plants cannot photosynthesize and die. The algae die. The bacteria decompose the algae, and they use up a lot of oxygen during this process. The fish and other aquatic organisms die.
Aquatic plants cannot photosynthesize and die. Algal blooms blocks light from entering lower levels of a pond or lake. The bacteria decompose the algae, and they use up a lot of oxygen during this process. The algae die. The fish and other aquatic organisms die.
What is the function of the ozone layer?
The Earth’s solar blanket, it traps 98% of the sun’s heat
The Earth’s air conditioner, it filters 98% of the sun’s heat
The Earth’s sunscreen, it filters 98% of the sun’s UV rays
The Earth’s air filter, it destroys 98% of the Earth’s bacteria and viruses
Where in the atmosphere is the ozone layer located?
3-5 km above the Earth’s surface
15-30 km below the Earth’s surface
150-300 km above the Earth’s surface
15-30 km above the Earth’s surface
O3 is the molecular formula of ozone?
True
False
Ozone layer depletion has led to an increase in phytoplankton reproduction.
True
False
PCBs are the main reason for the breakdown of the ozone layer?
True
False
The ozone layer the thinnest over Europe.
True
False
Ozone layer depletion has led to an increase in skin cancer and eye damage in humans.
True
False
