Need asap why is ice so important to the survival of the polar bear in the arctic? a. the polar bears can’t out swim the seals, so they sit quietly on an ice platform and attack the seals when they come up for air. b. the polar bears are hibernating for longer periods of time, so they are not able to get the food necessary to survive. c. the sea ice is important because the polar bears use the ice to go on their migration to warmer land areas d. the sea ice provides a place for the polar bears to take a nice nap in the sunshine.

Neelaredoxin is a 15-kda protein that is a gene product common in anaerobic prokaryotes. it has superoxide-scavenging activity, and it is constitutively expressed. in addition, its expression is not further induced during its exposure to o2 or h2o2 (silva, g., et al. 2001. j. bacteriol. 183: 4413–4420). which of the following statements best describes neelaredoxin synthesis? a-neelaredoxin is produced at all times; levels are constant even when exposed to o2 or h2o2.b-neelaredoxin is produced at all times; exposure to o2 or h2o2 increases expression.c-neelaredoxin is produced at all times; exposure to o2 or h2o2 decreases or prevents expression.d-neelaredoxin is only produced when there is exposure to o2 or h2o2.

Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.

Which is one example of a phenotypic change that is not genetic