Biology Quiz 2

An increase in the amount of nutrients in a lake is known as

• calcification

• cellular respiration

• eutrophication

• photosynthesis

Do not forget! There are aquatic plants under the lake too! What do you think the algae would do to the plants at the bottom of the lake?

• The aquatic plants will not be affected by the algae

• Sunlight cannot reach the bottom of the lake because the surface is covered in algae

• Sunlight can reach the bottom pf the lake. There is no problem.

Which of the following is NOT a source of nitrates and phosphates into a river?

• Fertilizers

• Animal waste

• Sewage/

  Wastewater

• Burning fossil fuels

How does eutrophication cause the death of aquatic organisms

• the build up of carbon dioxide in the water

• the lack of nitrogen in the water

• the lack of carbon dioxide in the water

• the lack of oxygen in the water

what is the leading cause of deforestation?

• Diseases 
• Housing market
• Agriculture and Farming
• Paper mill

What are the effects of deforestation ?

• loss of habitat
• increased green house gasses 
• soil erosion and flooding
• all of the above

Does deforestation contribute to global warming?

• No, trees aren't that important
• Sometimes because only the cutting down of Maple trees contributes to global warming
• No, deforestation adds methane to the atmosphere, which makes the Earth cooler
• Yes; less trees means less CO2 is turned into oxygen.

Deforestation causes an increase in atmospheric carbon dioxide

• true

• false

Which of the following gases are the cause of acid rain?

• methane

• carbon dioxide

• sulfur dioxide

• oxides of nitrogen

Which of the following are the problems caused by acid rain?

• It damages the decomposers. Decomposers unable to return nutrients to the soil.

• Soil become more acidic and plants unable to absorb important minerals from the soil.

• Slowly dissolves any structure made chalk, limestones and marble.

• All of the following