Which is am example of an internal stimulus? a) an increase in the amount of water available to a plant b) an artificial light attracts insects c) a decrease in oxygen levels in the blood during exercise d) a sudden change of air temperature

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.

The terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these

In each transformation of energy , some energy what?