2.2[c] Threats to Coastal Ecosystems

Question 1

What is the primary cause of coral bleaching?
A) Pollution
B) Overfishing
C) Increased water temperature
D) Sedimentation

Answer 1

C) Increased water temperature

Question 2

Which human activity is a major threat to mangrove forests?
A) Fishing
B) Urban development
C) Tourism
D) Agriculture

Answer 2

B) Urban development

Question 3

What is the main impact of ocean acidification on marine life?
A) Increased growth of coral reefs
B) Enhanced fish reproduction
C) Weakening of calcium carbonate structures
D) Improved water clarity

Answer 3

C) Weakening of calcium carbonate structures

Question 4

Which of the following is a consequence of rising sea levels?
A) Increased agricultural land
B) Coastal flooding
C) Formation of new mountains
D) Decreased rainfall

Answer 4

B) Coastal flooding

Question 5

What is the primary threat to seagrass meadows?
A) Overfishing
B) Pollution
C) Climate change
D) Deforestation

Answer 5

B) Pollution

Question 6

Which process can lead to the destruction of coral reefs?
A) Sedimentation
B) Erosion
C) Deposition
D) Weathering

Answer 6

A) Sedimentation

Question 7

What is the impact of coastal development on coastal ecosystems?
A) Increased biodiversity
B) Habitat destruction
C) Improved water quality
D) Enhanced fish populations

Answer 7

B) Habitat destruction

Question 8

Which factor contributes to the decline of salt marshes?
A) Rising sea levels
B) Increased salinity
C) Decreased nutrient levels
D) Overfishing

Answer 8

A) Rising sea levels

Question 9

What is the effect of plastic pollution on marine life?
A) Improved habitat conditions
B) Increased food availability
C) Entanglement and ingestion
D) Enhanced reproduction rates

Answer 9

C) Entanglement and ingestion

Question 10

Which human activity can lead to the loss of mangrove forests?
A) Fishing
B) Deforestation
C) Tourism
D) Agriculture

Answer 10

B) Deforestation

Question 11

What is the primary cause of habitat loss in coastal ecosystems?
A) Natural disasters
B) Human activities
C) Climate change
D) Predation

Answer 11

B) Human activities

Question 12

Which coastal ecosystem is most affected by rising sea levels?
A) Coral reef
B) Mangrove forest
C) Salt marsh
D) Seagrass meadow

Answer 12

C) Salt marsh

Question 13

What is the main threat to coral reefs from climate change?
A) Increased salinity
B) Rising sea levels
C) Ocean acidification
D) Decreased sunlight

Answer 13

C) Ocean acidification

Question 14

Which factor does NOT affect the distribution of coral reefs?
A) Temperature
B) Light
C) Water depth
D) Wind speed

Answer 14

D) Wind speed

Question 15

What is the primary function of kelp forests in marine ecosystems?
A) Providing food
B) Offering shelter
C) Stabilizing sediment
D) All of the above

Answer 15

D) All of the above

Question 16

Which coastal ecosystem is known for its ability to store large amounts of carbon?
A) Coral reef
B) Mangrove forest
C) Seagrass meadow
D) Salt marsh

Answer 16

B) Mangrove forest

Question 17

What is the main threat to mangrove forests?
A) Overfishing
B) Deforestation
C) Climate change
D) Pollution

Answer 17

B) Deforestation

Question 18

Which coastal ecosystem is found in temperate regions and higher latitudes?
A) Mangrove forest
B) Coral reef
C) Salt marsh
D) Seagrass meadow

Answer 18

C) Salt marsh

Question 19

What is the primary function of coral polyps in a reef?
A) Photosynthesis
B) Building the reef structure
C) Filtering water
D) Providing food for fish

Answer 19

B) Building the reef structure

Question 20

Which coastal ecosystem provides essential nursery habitats for many marine species?
A) Coral reef
B) Mangrove forest
C) Seagrass meadow
D) All of the above

Answer 20

D) All of the above