Answer:
thick,white fur
Explanation:
Their white fur helps them blend in with the snow and ice. A polar bear has a layer of fat under its skin which helps it stay warm. It also has a thick layer of fur
Answer:
no social hierarchy
Explanation:
in communism the ideology is about everyone being equal therefore, there shouldn't be a social hierarchy
Th correct answer is letter A. Echo sounding is very useful for depth profiles where SONAR is used to determine the depth of water through the transmission of sound pulses. It is calculated by checking the interval between the mission and the pulse that is recorded within the SONAR device.
