What causes sunburn? Why do we have trouble perceiving the energy that causes it?

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

What is one way intensive agriculture can contribute to climate change? a. tree loss to agriculture increases earth's albedo b. livestock manure absorbs greenhouse gases c. large herds of livestock release greenhouse gases d. fewer trees are available to replenish petroleum stores appex

What is the next step in the process after a substrate enters the active site of an enzyme