Which of the following best explains the diversion of water to the symplastic route once it encounters the casparian strip? a) the casparian strip is a waxy belt that transverses the cytosol of endodermal cells. b) the casparian strip is a waxy belt that transverses the walls of endodermal cells. c) the casparian strip is a waxy belt that transverses the cells of the root cortex.

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.  

carbon traps heat so more of it makes it hotter causing global warming. during the ice age carbon levels in the atmosphere were low so it got very cold. so the common things between them is carbon levels in the atmosphere.