Determine the difference between the abyssal plain of the ocean and the plains of the continents. A. The abyssal plain covers most of the ocean floor.

B. Plains are natural features found on Earth’s surface.

C. Plains include hills and valleys.

D. The abyssal plain is a flat area.

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How many species of living things are alive on earth today? more than 1,000,000 none of these answers are correct 100-500 1,000 –500,000 o 500,000 -1,000,000

Which layer will become saturated first when rain falls?

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?