Homework - Eutrophication & the Phosphorus Cycle (9-20-23)

Last updated over 1 year ago

26 questions

1

Library

Homework - Eutrophication & the Phosphorus Cycle (9-20-23)

Last updated over 1 year ago

26 questions

Question 1

00:22

Question 2

00:35

Question 3

00:42

Question 4

00:53

Question 5

01:07

Question 6

01:13

Questions 7 & 8

01:27

Question 9

01:33

Question 10

02:01

Question 11

02:16

Question 12

02:32

Question 13

02:38

Question 14

02:46

Question 15

03:12

Question 16

03:28

1

Which of the following elements is most likely to limit primary production in freshwater lakes:
__________

Which of the following elements is most likely to limit primary production from terrestrial plants:
__________

Matter is continually recycled between the biotic and abiotic components of Earth’s ecosystems in biogeochemical cycles. The various cycles differ from one another in several key aspects of their storage, conversion, and modes of transport.

1

Elements that cycle in the environment and that also have a gaseous phase at some point in their cycle include which of the following?
Carbon
Phosphorus
Sulfur

The diagram shows the amount of phosphorus measured in teragrams (1 teragram = 1×1012 grams), in the various reservoirs of the phosphorus cycle.
According to the diagram, the movement of phosphorus between biological organisms and soil is in a steady state in an undisturbed system. Which of the following best explains the reason for this steady movement?

A decrease in buffer zones prevents phosphorus runoff in waterways.

There is a rapid influx of phosphorus from the weathering of rocks.

Readily available organic phosphorus in the soil is assimilated by plants.

Phosphorus is taken up by plants during photosynthesis to create carbohydrates.

The diagram shows the amount of phosphorus measured in teragrams (1 teragram = 1×1012 grams), in the various reservoirs of the phosphorus cycle.
Which of the following is the best explanation for why there is such a small amount of phosphorus that moves into aquatic systems?

There is not a gaseous phase of the phosphorus cycle, and therefore the movement of phosphorus into oceanic reservoirs is very slow.

Phosphorus is highly stable in the atmosphere and remains there for long periods of time.

The amount of phosphorus in the cycle has been greatly reduced because of the use of catalytic converters in automobiles.

The phosphorus cycle occurs so rapidly that it does not exist in any one reservoir for a very long time.

The diagram shows the amount of phosphorus measured in teragrams (1 teragram = 1×1012 grams), in the various reservoirs of the phosphorus cycle.
Based on the diagram, which of the following reservoirs contains the most phosphorus?

Soil

Plants

Sediments

Oceans

Which of the following best helps to explain why phosphorus is often a limiting factor in many ecosystems?

Under many conditions, phosphorus forms stable insoluble compounds.

There are no anthropogenic sources of phosphorus.

There is usually a gaseous phase in the phosphorus cycle.

Phosphorus cycles very quickly through environments.

Which of the following elements is most likely to limit primary production in freshwater lakes:
__________

Which of the following elements is most likely to limit primary production from terrestrial plants:
__________

Matter is continually recycled between the biotic and abiotic components of Earth’s ecosystems in biogeochemical cycles. The various cycles differ from one another in several key aspects of their storage, conversion, and modes of transport.

1

Describe the critical processes by which nitrogen is cycled through the biotic and abiotic components of Earth’s ecosystems and identify the primary storage sink for nitrogen.

1

Identify EITHER one nitrogen compound OR one phosphorus compound that is considered a pollutant when released by human activity into the environment. For the compound you identified, describe the human activity and a specific environmental problem that results.

1

Describe ONE way in which humans have disrupted the natural cycling of carbon and TWO major environmental consequences of that disruption.

Plants need water, sunlight, CO2, but also...

What makes fertilizer so fertile is that it has __________

To be safe farmers will usually farmers will apply __________ fertilizer to a given plot of land. "Better safe than sorry". Instead of staying for __________ most of the excess __________ in fertilizers will be __________ or other forms of irrigation. 

Phosphorus and nitrogen from fertilizers after being washed off farmland will mix with water and find ways into bodies of water like...

Algae, __________, and even plants in the water do the same thing plants do, they __________, well actually they __________, this is called an __________.

Plants are always good for the environment.

True

False

The top layer of algae forms an __________. This prevents __________ from going into the bottom of the lake. Without the presence of sunlight all of the plants below the surface __________. Many plants can store enough energy to wait out these conditions. The real problem is when __________ and the water can no longer support so much life. 

Decomposers consume...

oxygen

boron

freeon

When a bloom occurs far more organic matter is ready to decompose. So nearly all of the oxygen in the water is used up... why is that bad...

none is left for the animals in the water

all is available for the animals increasing competition

Plants and phytoplankton and fish that die in an algal bloom sink to the bottom and are decomposed by decomposers this...

uses up carbon dioxide in the water

natural oil spill water

uses blood from the water

uses up oxygen in the water

Nutrient-rich run off can be causes by

energy deficient nomosis

diatom eating

animal farms where nutrient-rich waste materials leak into bodies of water

clear cutting land

Elements that cycle in the environment and that also have a gaseous phase at some point in their cycle include which of the following?
Carbon
Phosphorus
Sulfur

I and II only

I, II, and III

III only

I and III only

I only

The diagram shows the amount of phosphorus measured in teragrams (1 teragram = 1×1012 grams), in the various reservoirs of the phosphorus cycle.
According to the diagram, the movement of phosphorus between biological organisms and soil is in a steady state in an undisturbed system. Which of the following best explains the reason for this steady movement?

A decrease in buffer zones prevents phosphorus runoff in waterways.

There is a rapid influx of phosphorus from the weathering of rocks.

Readily available organic phosphorus in the soil is assimilated by plants.

Phosphorus is taken up by plants during photosynthesis to create carbohydrates.

The diagram shows the amount of phosphorus measured in teragrams (1 teragram = 1×1012 grams), in the various reservoirs of the phosphorus cycle.
Which of the following is the best explanation for why there is such a small amount of phosphorus that moves into aquatic systems?

There is not a gaseous phase of the phosphorus cycle, and therefore the movement of phosphorus into oceanic reservoirs is very slow.

Phosphorus is highly stable in the atmosphere and remains there for long periods of time.

The amount of phosphorus in the cycle has been greatly reduced because of the use of catalytic converters in automobiles.

The phosphorus cycle occurs so rapidly that it does not exist in any one reservoir for a very long time.

The diagram shows the amount of phosphorus measured in teragrams (1 teragram = 1×1012 grams), in the various reservoirs of the phosphorus cycle.
Based on the diagram, which of the following reservoirs contains the most phosphorus?

Soil

Plants

Sediments

Oceans

Which of the following best helps to explain why phosphorus is often a limiting factor in many ecosystems?

Under many conditions, phosphorus forms stable insoluble compounds.

There are no anthropogenic sources of phosphorus.

There is usually a gaseous phase in the phosphorus cycle.

Phosphorus cycles very quickly through environments.

Describe the critical processes by which nitrogen is cycled through the biotic and abiotic components of Earth’s ecosystems and identify the primary storage sink for nitrogen.

Identify EITHER one nitrogen compound OR one phosphorus compound that is considered a pollutant when released by human activity into the environment. For the compound you identified, describe the human activity and a specific environmental problem that results.

Describe ONE way in which humans have disrupted the natural cycling of carbon and TWO major environmental consequences of that disruption.

Plants need water, sunlight, CO2, but also...

Phosphorus (P4)

pectin (PTC)

nitrogen (N2)

coriolus (COOOO)

dectin (DTO)

viceroi (V)

Phosphorus and nitrogen from fertilizers after being washed off farmland will mix with water and find ways into bodies of water like... 

beaver tracks

ocean

ponds

reservoirs

lakes

Plants are always good for the environment.

True

False

Decomposers consume...

oxygen

boron

freeon

When a bloom occurs far more organic matter is ready to decompose. So nearly all of the oxygen in the water is used up... why is that bad...

none is left for the animals in the water

all is available for the animals increasing competition

Plants and phytoplankton and fish that die in an algal bloom sink to the bottom and are decomposed by decomposers this... 

uses up carbon dioxide in the water

natural oil spill water

uses blood from the water

uses up oxygen in the water

Nutrient-rich run off can be causes by 

energy deficient nomosis

diatom eating

animal farms where nutrient-rich waste materials leak into bodies of water

clear cutting land

Homework - Eutrophication & the Phosphorus Cycle (9-20-23)

Homework - Eutrophication & the Phosphorus Cycle (9-20-23)

Elements that cycle in the environment and that also have a gaseous phase at some point in their cycle include which of the following?CarbonPhosphorusSulfur

The diagram shows the amount of phosphorus measured in teragrams (1 teragram = 1×1012 grams), in the various reservoirs of the phosphorus cycle.Which of the following is the best explanation for why there is such a small amount of phosphorus that moves into aquatic systems?

The diagram shows the amount of phosphorus measured in teragrams (1 teragram = 1×1012 grams), in the various reservoirs of the phosphorus cycle.Based on the diagram, which of the following reservoirs contains the most phosphorus?

Which of the following best helps to explain why phosphorus is often a limiting factor in many ecosystems?

Describe the critical processes by which nitrogen is cycled through the biotic and abiotic components of Earth’s ecosystems and identify the primary storage sink for nitrogen.

Identify EITHER one nitrogen compound OR one phosphorus compound that is considered a pollutant when released by human activity into the environment. For the compound you identified, describe the human activity and a specific environmental problem that results.

Describe ONE way in which humans have disrupted the natural cycling of carbon and TWO major environmental consequences of that disruption.

Plants need water, sunlight, CO2, but also...

Phosphorus and nitrogen from fertilizers after being washed off farmland will mix with water and find ways into bodies of water like...

Plants are always good for the environment.

Decomposers consume...

When a bloom occurs far more organic matter is ready to decompose. So nearly all of the oxygen in the water is used up... why is that bad...

Plants and phytoplankton and fish that die in an algal bloom sink to the bottom and are decomposed by decomposers this...

Nutrient-rich run off can be causes by

Describe the critical processes by which nitrogen is cycled through the biotic and abiotic components of Earth’s ecosystems and identify the primary storage sink for nitrogen.

Identify EITHER one nitrogen compound OR one phosphorus compound that is considered a pollutant when released by human activity into the environment. For the compound you identified, describe the human activity and a specific environmental problem that results.

Describe ONE way in which humans have disrupted the natural cycling of carbon and TWO major environmental consequences of that disruption.

Elements that cycle in the environment and that also have a gaseous phase at some point in their cycle include which of the following?
Carbon
Phosphorus
Sulfur

The diagram shows the amount of phosphorus measured in teragrams (1 teragram = 1×1012 grams), in the various reservoirs of the phosphorus cycle.
Which of the following is the best explanation for why there is such a small amount of phosphorus that moves into aquatic systems?

The diagram shows the amount of phosphorus measured in teragrams (1 teragram = 1×1012 grams), in the various reservoirs of the phosphorus cycle.
Based on the diagram, which of the following reservoirs contains the most phosphorus?