WorksheetsWater Pollution
Total questions: 10
Worksheet time: 4mins
Eutrophication is
too few nutrients in a body of water.
too many nutrients in a body of water.
high acid levels in a body of water.
high alkalinity levels in a body of water.
Eutrophication is caused by...
fossil fuel burning in power plants.
automobiles burning fossil fuels.
over fertilizing farm fields.
limestone rocks in a body of water.
Chemicals that contribute to eutrophication include... (pick all that apply)
dissolved Oxygen.
phosphates.
nitrates.
sulfuric acid.
Nutrients cause what effect in our creeks and rivers?
limestone to disappear.
dissolved Oxygen levels to rise.
algae to grow more rapidly.
bacteria populations to decrease.
When nutrient levels rise to high levels in a body of water, the effect on dissolved Oxygen levels is...
decreases.
increases.
does not change.
When algae levels increase in a body of water, it
cuts off light to plants at the bottom.
increases light to the plants on the bottom.
causes dissolved Oxygen levels increase.
causes bacteria populations decrease.
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.
In eutrophication, dissolved oxygen levels decrease because
decomposers use it in cellular respiration
algae bloom and use it up
plant nutrients react with the dissolved oxygen
fish use it up
Which organisms are most affected by bioaccumuation?
Top predators
Producers
Primary Consumers
Herbivores
What is bioaccumulation
lack of oxygen caused by excessive nutrients in the water
an excess of pests
the build up of toxins in a food chain
an accumulation of biomes
