How does clear cutting compare with selective cutting, and why is selective cutting considered more sustainable than clear cutting?

Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?

Does any one know what blood tastes like