Living things that migrate to survive in the tundra​

Many animals that live in the tundra, like the caribou and the semipalmated plover, migrate to warmer climates during the winter. Others, like the arctic ground squirrel, hibernate during the winter months. There are very few reptiles and amphibians found in the tundra because the temperatures are so cold.

Explanation:

the answer is d.) homologous; have mammary glands

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.