Polar bears hunt for ringed seals by waiting for them to emerge from breathing holes in the ice. Which abiotic change may decrease a polar bear’s ability to hunt?(1 point)
Responses
increased seal population
increased seal population
increased competition
increased competition
increased ice cover
increased ice cover
increased temperatures
increased temperatures
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increased temperatures
Ringed seals give birth in lairs carved out of packed snowdrifts. Which abiotic change may increase pup mortality?(1 point)
Responses
reduced carbon dioxide
reduced carbon dioxide
reduced temperatures
reduced temperatures
reduced polar bear population
reduced polar bear population
reduced snowfall
reduced snowfall
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reduced snowfall
Which component of a marine ecosystem is abiotic?(1 point)
Responses
shark
shark
dolphin
dolphin
algae
algae
water
water
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water
Climate change has increased the mean temperature in central Europe. How might bird populations respond to this change?(1 point)
Responses
change their diet
change their diet
move their range south
move their range south
move their range north
move their range north
lay more eggs
lay more eggs
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move their range north
What two factors are negatively affecting coral reefs due to climate change?(1 point)
Responses
Higher ocean temperatures and more acidic waters
Higher ocean temperatures and more acidic waters
Higher ocean temperatures and less acidic waters
Higher ocean temperatures and less acidic waters
Lower ocean temperatures and more acidic waters
Lower ocean temperatures and more acidic waters
Lower ocean temperatures and less acidic waters
Lower ocean temperatures and less acidic waters
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