1 batería cell is the answer .
C. Mutualistic relationship
Flowers and hummingbirds have a mutualistic relationship where both benefit. Flowers produce food in the form of nectar (sugar and water) to attract hummingbirds which, in turn, move pollen for the plant (pollination).
Answer:
returns to the left heart, completing the pulmonary cycle
Explanation:
They use their resources and habitats around them to survive.
