The diagram shows the heart of a bird. What is the function of the structure labeled Y?

to keep oxygen-rich blood and oxygen-poor blood flowing
to filter waste materials from oxygen-poor blood
to filter waste materials from oxygen-rich blood
to keep oxygen-rich blood and oxygen-poor blood separate

Explain the advantages of the bird's heart over the amphibian's heart. A bird's heart has 4 chambers. ... Identify the structure labeled C in the diagram, and describe its function. Cuticle, control water loss ... the diagram shows only three of the flower's six petals.

Explanation:

To keep oxygen-rich blood and oxygen-poor blood seperate

Explanation:

D

the answer is tropical areas. the tropical areas obtain more

radiant energy from the sun than they lose to space through terrestrial

radiation, and vice versa for polar areas. earth has an energy remaining in the

tropics and an energy scarcity for the polar areas.

explanation:

lysosomes contain a variety of enzymes, enabling the cell to break down various biomolecules it engulfs, including peptides, nucleic acids, carbohydrates, and lipids (lysosomal lipase). the enzymes responsible for this hydrolysis require an acidic environment for optimal activity. hope i !