What can isobars that are drawn very closely together reveal about the weather?

How are the cell walls of a plant and fungus different ?

What causes an unsaturated fatty acid to have a different shape than a saturated fatty acid? o a. unsaturated fatty acids have more hydrogen atoms. o b. unsaturated fatty acids have double carbon bonds. o c. unsaturated fatty acids have more nitrogen atoms. o d. unsaturated fatty acids have single carbon bonds.

What was the land like over 500 million years ago? what was under the sea?