Why frogs and lizards cannot experience chronic stress like that ?

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.

Natural resources are any materials that humans obtain from the earth to meet our wants and needs.

24. how are vaccines used to keep people healthy?