What is the function of skeletal muscles? to control the movement of internal organs to control the contractions of the heart to move bones

Alaska and northern canada have a diet rich in vitamin d and their skin color is darker than predicted on the basis of iv intensity at their latitude. explain the observation:

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere

Which of the following two events occur to create a sea breeze? select all that apply. warm air rises on the ocean and moves toward the land to cool warm air rises on land and moves toward the ocean to cool cool air moves from the ocean to be warmed by the land cool air moves from the land to be warmed by the ocean