Which structures in animals are similar to xylem and phloem in plants? question 1 options: gills or lungs blood vessels skin cells muscles

Describe speciation of the galapagos island finches in terms of geographic isolation

The oxidizing agent our bodies use to obtain energy from food is oxygen (from the air). if you breathe 15 times a minute (at rest), taking in and exhaling 0.5 l of air with each breath, what volume of air do you breathe each day? air is 21% oxygen by volume. what volume of oxygen do you breathe each day?

At which location in earth’s interior does the top density continue to increase as thickness decreases?