0654 B13 Impacts of Humans on Ecosystems Quiz

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Question 1 of 30

The diagram represents the carbon cycle.

Which process is represented by arrow X?

Select one of the following:

A combustion
B feeding
C photosynthesis
D respiration

Explanation

Question 2 of 30

The graph shows the increase in the human population of the world since 1630.

What was the longest time taken for the population to double?

Select one of the following:

A 100 years
B 200 years
C 300 years
D 400 years

Explanation

Question 3 of 30

The graphs show the number of carnivores in a habitat over a period of time.
At time X the herbivores in their food chain are removed from the habitat.

Which graph shows the effect of this on the number of carnivores?

Select one of the following:

Explanation

Question 4 of 30

The diagram shows the positions of four farms and the concentrations of nitrate at different points in a river.

Which farm is likely to have been using too much fertiliser on its land?

Select one of the following:

Explanation

Question 5 of 30

The table shows some information about two closely related species of sea bird.
Sewage pollution at the mouth of a river destroys its fish stocks.

What is likely to happen to local populations of these birds?

Select one of the following:

A There will be no change to either species.
B Species X numbers will decrease, species Y will remain constant.
C Species Y numbers will decrease, species X will remain constant.
D Both species numbers will increase.

Explanation

Question 6 of 30

Three human activities are listed.
1 burning fossil fuels
2 deforestation
3 overusing fertilisers

Which activities can cause the change shown in the graph?

Select one of the following:

A 1, 2 and 3
B 1 and 2 only
C 1 only
D 2 and 3 only

Explanation

Question 7 of 30

What is reduced after deforestation?

Select one of the following:

A force of rain hitting the ground
B rainwater run-off
C soil erosion
D soil fertility

Explanation

Question 8 of 30

The diagram shows four positions on a river where water samples were taken.

Which graph shows oxygen concentrations in the river?

Select one of the following:

Explanation

Question 9 of 30

A large amount of herbicide is applied to a field. Heavy rainfall carries much of it into a nearby lake.

What will be the effect of this on the lake?

Select one of the following:

A Herbicide decreases the growth of water plants.
B Herbicide decreases the number of bacteria.
C Herbicide increases the rate of evaporation from the lake.
D Herbicide kills the fish.

Explanation

Question 10 of 30

The table shows the amount of carbon dioxide in the atmosphere in three different years.

What is the most likely cause of this change?

Select one of the following:

A destruction of rainforests
B increased use of fertilisers containing nitrogen
C pollution of air by sulfur dioxide
D rise in the sea level

Explanation

Question 11 of 30

Which two gases both contribute to global warming?

Select one of the following:

A carbon dioxide and methane
B methane and oxygen
C oxygen and sulfur dioxide
D sulfur dioxide and carbon dioxide

Explanation

Question 12 of 30

Over-use of fertilisers on farmland causes the chemicals in the fertilisers to be washed into ponds and lakes.
This causes eutrophication resulting in the following events.
1 algae grow
2 fish die
3 bacteria grow
4 oxygen decreases

What is the correct sequence of these events?

Select one of the following:

A 1 → 3 → 4 → 2
B 1 → 4 → 3 → 2
C 3 → 4 → 2 → 1
D 4 → 1 → 2 → 3

Explanation

Question 13 of 30

The concentration of a pesticide in the tissues of the organisms in the following food chain was measured.

Which bar on the chart represents the large fish?

Select one of the following:

Explanation

Question 14 of 30

The diagram shows how sewage is treated.

Why is air bubbled through the aeration tank?

Select one of the following:

A to encourage microorganisms to reproduce quickly
B to float the sludge
C to settle the sludge
D to stop microorganisms from reproducing too quickly

Explanation

Question 15 of 30

Three human activities are listed.
1 burning fossil fuels
2 deforestation
3 overusing fertilisers

Which activities can cause the change shown in the graph?

Select one of the following:

A 1, 2 and 3
B 1 and 2 only
C 1 only
D 2 and 3 only

Explanation

Question 16 of 30

What is a reason for conserving plant species?

Select one of the following:

A to absorb oxygen from the air
B to decrease rainfall
C to obtain drugs for medicinal use
D to release carbon dioxide into the air

Explanation

Question 17 of 30

What is reduced after deforestation?

Select one of the following:

A force of rain hitting the ground
B rainwater run-off
C soil erosion
D soil fertility

Explanation

Question 18 of 30

The diagram shows four positions on a river where water samples were taken.

Which graph shows oxygen concentrations in the river?

Select one of the following:

Explanation

Question 19 of 30

Which process may result in eutrophication in a lake?

Select one of the following:

A bleach entering from a factory
B fertilisers entering from farmland
C hot water entering from a power station
D pesticides entering from farmland

Explanation

Question 20 of 30

Which two gases are the biggest contributors to the greenhouse effect?

Select one of the following:

A carbon dioxide and methane
B carbon monoxide and carbon dioxide
C methane and sulfur dioxide
D sulfur dioxide and carbon monoxide

Explanation

Question 21 of 30

Untreated sewage is released into a river at point X.

Which graph correctly shows changes in oxygen concentration of the water as the river flows away from X?

Select one of the following:

Explanation

Question 22 of 30

What changes in combustion and deforestation increase carbon dioxide in the atmosphere?

Select one of the following:

Explanation

Question 23 of 30

What is the principal source of energy input into a biological system?

Select one of the following:

A consumer
B decomposer
C producer
D Sun

Explanation

Question 24 of 30

Some of the stages of eutrophication are listed.
1 death of organisms requiring dissolved oxygen in water
2 increased availability of nitrate and other ions
3 increased decomposition after death of producers
4 reduction in dissolved oxygen

What is the correct order of these stages in eutrophication?

Select one of the following:

A 2 → 1 → 4 → 3
B 2 → 3 → 4 → 1
C 3 → 2 → 4 → 1
D 3 → 4 → 1 → 2

Explanation

Question 25 of 30

The list shows changes that occur in a lake which is polluted by nitrogen-containing fertiliser.
1 decomposers feed on plants
2 growth of algae increases on the lake’s surface
3 oxygen levels decrease in the lake
4 underwater plants die

In which order do these changes occur?

Select one of the following:

A 2 → 4 → 1 → 3
B 2 → 3 → 4 → 1
C 3 → 4 → 2 → 1
D 3 → 4 → 1 → 2

Explanation

Question 26 of 30

The bloodworm is an organism that is found in heavily polluted water.
The diagram shows where raw sewage flows into a river.

Where would there be fewest bloodworms?

Select one of the following:

Explanation

Question 27 of 30

What are the possible effects of deforestation?

Select one of the following:

Explanation

Question 28 of 30

Large areas of tropical forests have been cleared to grow monocultures of palm oil plants.

Which effect will this have on the ecosystem?

Select one of the following:

A The use of fossil fuels in the area will decrease.
B The use of pesticides in the area will decrease.
C The variety of species in the area will decrease.
D The variety of species in the area will increase.

Explanation

Question 29 of 30

What is not a reason for using chemical fertilisers in food production?

Select one of the following:

A improving growth rate
B improving mineral content of the soil
C increasing yields
D reducing competition with weeds

Explanation

Question 30 of 30

The diagram shows how sewage is treated.

Why is air bubbled through the aeration tank?

Select one of the following:

A to encourage microorganisms to reproduce quickly
B to float the sludge
C to settle the sludge
D to stop microorganisms from reproducing too quickly

Explanation

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	Created by Jeffrey Piggott over 5 years ago

Quiz for 0654 Coordinated Sciences on the impact of humans on natural ecosystems.

0654 B13 Impacts of Humans on Ecosystems Quiz

Question 1 of 30

The diagram represents the carbon cycle. Which process is represented by arrow X?

Select one of the following:

Explanation

Question 2 of 30

The graph shows the increase in the human population of the world since 1630. What was the longest time taken for the population to double?

Select one of the following:

Explanation

Question 3 of 30

The graphs show the number of carnivores in a habitat over a period of time. At time X the herbivores in their food chain are removed from the habitat. Which graph shows the effect of this on the number of carnivores?

Select one of the following:

Explanation

Question 4 of 30

The diagram shows the positions of four farms and the concentrations of nitrate at different points in a river. Which farm is likely to have been using too much fertiliser on its land?

Select one of the following:

Explanation

Question 5 of 30

The table shows some information about two closely related species of sea bird. Sewage pollution at the mouth of a river destroys its fish stocks. What is likely to happen to local populations of these birds?

Select one of the following:

Explanation

Question 6 of 30

Three human activities are listed. 1 burning fossil fuels 2 deforestation 3 overusing fertilisers Which activities can cause the change shown in the graph?

Select one of the following:

Explanation

Question 7 of 30

What is reduced after deforestation?

Select one of the following:

Explanation

Question 8 of 30

The diagram shows four positions on a river where water samples were taken. Which graph shows oxygen concentrations in the river?

Select one of the following:

Explanation

Question 9 of 30

A large amount of herbicide is applied to a field. Heavy rainfall carries much of it into a nearby lake. What will be the effect of this on the lake?

Select one of the following:

Explanation

Question 10 of 30

The table shows the amount of carbon dioxide in the atmosphere in three different years. What is the most likely cause of this change?

Select one of the following:

Explanation

Question 11 of 30

Which two gases both contribute to global warming?

Select one of the following:

Explanation

Question 12 of 30

Over-use of fertilisers on farmland causes the chemicals in the fertilisers to be washed into ponds and lakes. This causes eutrophication resulting in the following events. 1 algae grow 2 fish die 3 bacteria grow 4 oxygen decreases What is the correct sequence of these events?

Select one of the following:

Explanation

Question 13 of 30

The concentration of a pesticide in the tissues of the organisms in the following food chain was measured. Which bar on the chart represents the large fish?

Select one of the following:

Explanation

Question 14 of 30

The diagram shows how sewage is treated. Why is air bubbled through the aeration tank?

Select one of the following:

Explanation

Question 15 of 30

Three human activities are listed. 1 burning fossil fuels 2 deforestation 3 overusing fertilisers Which activities can cause the change shown in the graph?

Select one of the following:

Explanation

Question 16 of 30

What is a reason for conserving plant species?

Select one of the following:

Explanation

Question 17 of 30

What is reduced after deforestation?

Select one of the following:

Explanation

Question 18 of 30

The diagram shows four positions on a river where water samples were taken. Which graph shows oxygen concentrations in the river?

Select one of the following:

Explanation

Question 19 of 30

Which process may result in eutrophication in a lake?

Select one of the following:

Explanation

Question 20 of 30

Which two gases are the biggest contributors to the greenhouse effect?

The diagram represents the carbon cycle.

Which process is represented by arrow X?

The graph shows the increase in the human population of the world since 1630.

What was the longest time taken for the population to double?

The graphs show the number of carnivores in a habitat over a period of time.
At time X the herbivores in their food chain are removed from the habitat.

Which graph shows the effect of this on the number of carnivores?

The diagram shows the positions of four farms and the concentrations of nitrate at different points in a river.

Which farm is likely to have been using too much fertiliser on its land?

The table shows some information about two closely related species of sea bird.
Sewage pollution at the mouth of a river destroys its fish stocks.

What is likely to happen to local populations of these birds?

Three human activities are listed.
1 burning fossil fuels
2 deforestation
3 overusing fertilisers

Which activities can cause the change shown in the graph?

The diagram shows four positions on a river where water samples were taken.

Which graph shows oxygen concentrations in the river?

A large amount of herbicide is applied to a field. Heavy rainfall carries much of it into a nearby lake.

What will be the effect of this on the lake?

The table shows the amount of carbon dioxide in the atmosphere in three different years.

What is the most likely cause of this change?

Over-use of fertilisers on farmland causes the chemicals in the fertilisers to be washed into ponds and lakes.
This causes eutrophication resulting in the following events.
1 algae grow
2 fish die
3 bacteria grow
4 oxygen decreases

What is the correct sequence of these events?

The concentration of a pesticide in the tissues of the organisms in the following food chain was measured.

Which bar on the chart represents the large fish?

The diagram shows how sewage is treated.

Why is air bubbled through the aeration tank?

Three human activities are listed.
1 burning fossil fuels
2 deforestation
3 overusing fertilisers

Which activities can cause the change shown in the graph?

The diagram shows four positions on a river where water samples were taken.

Which graph shows oxygen concentrations in the river?

Untreated sewage is released into a river at point X.

Which graph correctly shows changes in oxygen concentration of the water as the river flows away from X?

The list shows changes that occur in a lake which is polluted by nitrogen-containing fertiliser.
1 decomposers feed on plants
2 growth of algae increases on the lake’s surface
3 oxygen levels decrease in the lake
4 underwater plants die

In which order do these changes occur?

The bloodworm is an organism that is found in heavily polluted water.
The diagram shows where raw sewage flows into a river.

Where would there be fewest bloodworms?

Large areas of tropical forests have been cleared to grow monocultures of palm oil plants.

Which effect will this have on the ecosystem?

The diagram shows how sewage is treated.

Why is air bubbled through the aeration tank?