Enzymes influence chemical reactions in living systems by
1) becoming part of the product after the reactions occur
2) combining with atmospheric gasses to form waste products
3) affecting the rate at which reactions occur
4) absorbing water during synthesis and digestion

What do scientific models predict will happen to earth's temperature if current trends continue unmitigated? a. earth will heat and cool in a natural cycle b. earth will heat up and then return to an ice age c. earth will continue to warm at a rate of 0.25 c per decade d. earth will start to cool at a rate of 0.25 c per decade appex