Why preparation of soil is very important step for crop production?very important step for crop production?(b) Makes the top soil nutrient rich.(a) Makes decomposition by microbes easier.(a) Makes decomposition by microbes easier. (b) Makes the top soil nutrient rich. (c) Allows roots to penetrate the soil easily.(c) Allows roots to penetrate the soil easily. (d) All of these.

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.  

i'd have to say the answer is probable the second option "the geosphere interacting with the atmosphere"