Essential amino acids cannot be produced by the body so they must come from our diet. we can get them from eating foods that contain which biomolecule?
a. protein
b. complex carbohydrates
c. fats
d. disaccharides

Each hereditary trait corresponds to

Where is having brightly colored feathers that attract mates most clearly an adaptation for a bird? a. a forest with dense vegetation b. a sandy beach beside an ocean c. a snowy tundra with little vegetation d. a swamp with many hawks that eat birds

Identify the area on the image where the force of attraction is the strongest.