4. Which is the best expression of how scientists think of cause and effect? Everything is totally random.
Things happen all the time for no reason
Everything happens for a reason
It's impossible to decide what causes most phenomena in the universe.

a neutral ph of 7 and normal organism temperature is needed for a certain enzyme to be effective.  

what would happen to the enzyme if the ph and/or temperature fluctuate greatly from the norm?  

a.the enzyme’s hydrogen bonds will break.  

b.the activation energy will increase.  

c.more product will be formed.

d.the ideal temperature and ph for the enzyme function will decrease.  

d. groundwater flows through the subsoil and deposits minerals.