Artificial reefs have many positive impacts on oceans. Which of the following is a positive impact of an artificial reef?
Artificial reefs have many positive impacts on oceans. Which of the following is a positive impact of an artificial reef?
As the artificial reef establishes itself, it helps regulate the temperature of the surrounding ocean water.
Artificial reefs are helping get rid of old tires that would otherwise go to a landfill. The tires are placed on the ocean floor so that the coral has a place to attach to.
Artificial reefs give coral a place to attach to, increasing the coral population, which increases the population of other organisms that rely on the coral.
Artificial reefs can increase the amount of sunlight that reaches the ocean floor. This increases the population of phytoplankton, and coral eat phytoplankton.
The positive impact of an artificial reef is: Artificial reefs give coral a place to attach to, increasing the coral population, which increases the population of other organisms that rely on the coral.
Which of these human activities is most likely to cause the excessive growth of algae in a lake or ocean?
Which of these human activities is most likely to cause the excessive growth of algae in a lake or ocean?
The mining of fossil fuels, which requires drilling underground and possibly effecting the groundwater.
The logging of forests which results in erosion.
The spraying of herbicides that kill weeds, then the herbicide running off the land and being carried to the lake/ocean.
The use of chemical fertilizers that are carried by runoff into rivers, then lakes and oceans.
The use of chemical fertilizers that are carried by runoff into rivers, then lakes and oceans is most likely to cause the excessive growth of algae in a lake or ocean.
How does an algal bloom deplete the oxygen supply?
How does an algal bloom deplete the oxygen supply?
As the larger population of algae die, a larger population of decomposers use up oxygen while decomposing the algae.
The larger population of algae can no longer photosynthesize and release oxygen.
The larger population of algae absorb all of the oxygen during the process of photosynthesis.
The larger population of algae cover the surface of the pond so oxygen does not get into the water.
As the larger population of algae die, a larger population of decomposers use up oxygen while decomposing the algae.
Which of the locations below would likely cause the greatest amount of phosphates to be added to lake and ocean waters?
Which of the locations below would likely cause the greatest amount of phosphates to be added to lake and ocean waters?
The corn crop because of the fertilizer used.
The forest because rainwater picks up dead leaves and debris and deposits them in the ocean.
The factories because they burn fossil fuels.
The waste water treatment plant because it releases methane into the air.