Polar molecules are
nonpolar molecules are
---and

A polar molecule is a molecule that has a positive and negative charge at either end.

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.

the answer is d.) homologous; have mammary glands