Pelicans and humans have complex heart because there is need
for them to deliver more oxygen per liter blood to the body. Also, there heart is made up of four chamber and they have high
metabolic rate which necessitate them to supply efficient blood throughout the body.
Carbohydrates act as an energy storage molecule
Answer:
Increases
Explanation:
The concentration of mercury will increases as it moves up the food chain because of biomagnification. For example, a school of small fish consumes a minute amount of mercury each, but then a larger fish eats five of the smaller fish. After this the larger fish has more mercury in its system than one small fish because it ate five small fish (along with the mercury in each of the small fish). Now a seal eats multiple large fish. Overall, the seal has the highest mercury concentration out of all the animals mentioned.
Biomagnification is "the concentration of toxins in an organism as a result of its ingesting other plants or animals in which the toxins are more widely disbursed."
The three main parts of a seed are the seed coat, embryo and the endosperm. The seed coat is what protects the embryo and contains all the features to form a new plant. The endosperm nourishes the embryo until it can sustain itself and produce its own food.
Answer:
Its protein; because none of the macromolecules have an 'r group'.