C. living things respond to stimuli in the environment
Enzymes lower the activation energy of a chemical reaction.
Answer:
It began after the stock market crash of October 1929, which sent Wall Street into a panic and wiped out millions of investors. Over the next several years, consumer spending and investment dropped, causing steep declines in industrial output and employment as failing companies laid off workers
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Answer:
A. solar energy in the rays of sunlight
Explanation:
photons in the sunlight rays will excite the electrons in the water molecule and hence will provide the energy for calvin cycle.
