Which of the following blood vessel carries impure blood from heart to lungs for purification? *
Pulmonary vein
Pulmonary artery
Capillaries
None of them
Other:

4the indian leaf butterfly has traits that allow it to resemble a leaf. the bright colors of the monarch butterfly indicate that the butterfly tastes bad and can be poisonous. how does the appearance of these butterflies them to survive? f the indian leaf butterfly is able to avoid predators while the monarch butterfly warns predators away. g. the indian leaf butterfly frightens predators away while the monarch butterfly poisons predators before they can eat it. h both butterflies rely on camouflage to avoid predation. j both butterflies cooperate with one another to avoid predation.

Describe how a student should adjust the microscope to see the cells on a slide more clearly?

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?