Answer: lower the activation energy for reactions they catalyze
Explanation: this should be the correct answer but i'm not seeing it for your question, if you forgot to leave it out well this is correct, however if you did not leave this out then I would say A.
They produce food with energy from the sun
B changed in the frequently of the certain alleles in a population
Answer:
Global warming is the unusually rapid increase in Earth's average surface temperature over the past century primarily due to the greenhouse gases released by people burning fossil fuels.
