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)

Question

Responses

increased temperatures
increased temperatures

increased ice cover
increased ice cover

increased competition
increased competition

increased seal population

Answer 1

increased temperatures

Answer 2

Ringed seals give birth in lairs carved out of packed snowdrifts. Which abiotic change may increase pup mortality?(1 point)
Responses

reduced polar bear population
reduced polar bear population

reduced temperatures
reduced temperatures

reduced carbon dioxide
reduced carbon dioxide

reduced snowfall

Answer 3

reduced snowfall

Answer 4

Which component of a marine ecosystem is abiotic?(1 point)
Responses

dolphin
dolphin

algae
algae

water
water

shark

Answer 5

water

Answer 6

Climate change has increased the mean temperature in central Europe. How might bird populations respond to this change?(1 point)
Responses

lay more eggs
lay more eggs

move their range south
move their range south

change their diet
change their diet

move their range north

Answer 7

move their range north

Answer 8

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

Answer 9

Higher ocean temperatures and more acidic waters