Question

1. the arctic food web during spring and early summer months, polar bears typically hunt on sea ice for ringed seals and return to land in late summer months. climate change is causing periods of reduced sea ice forcing polar bears to return to land sooner. this early arrival brings the bears back to shore around the same time that nesting snow geese are incubating their eggs. snow goose eggs are typically food for arctic foxes, but the bears are eating more than 200 eggs a day. scientist initially were worried that this may have significant impacts on the snow goose populations, but data indicates minimum impact on this population. figure 1 shows the arctic food web during periods of normal sea ice and periods of reduced sea ice. which property of water are polar bears dependent on when hunting ringed seals? a. cohesion b. versatility as a solvent c. expansion upon freezing d. ability to moderate temperature

Explanation:

Polar bears hunt ringed seals on sea - ice. Water expands upon freezing to form ice, which provides the platform for polar bears to hunt. Cohesion is related to water molecules sticking together, solvent property is about dissolving substances, and temperature - moderating ability is about heat capacity. None of these are as directly relevant as ice formation due to water's expansion upon freezing.

Answer:

C. Expansion upon freezing