250 billion ± 150 billion
Answer: The absorbed energy warms the atmosphere and the surface of the Earth. This process maintains the Earth's temperature at around 33 degrees Celsius warmer than it would otherwise be, allowing life on Earth to exist. Greenhouse gases keep our planet livable by holding onto some of Earth's heat energy so that it doesn't all escape into space. This heat trapping is known as the greenhouse effect. Just as too little greenhouse gas makes Earth too cold, too much greenhouse gas makes Earth too warm.
Explanation:
Answer:
A Bacterium.
Explanation:
Bacterium reproduce much much faster than the other three, and with each generation, more chances of change in DNA
Enzymes affect a chemical reaction, making it easier to occur by reducing the activation energy; <u>option B</u>
<h3>What are enzymes?</h3>
Enzymes are biological molecules that alter the rate of chemical reactions occurring in the body.
Enzymes usually speed up the rate of reactions by making the reactions less energy-demanding, that is by lowering the activation energy of the biochemical reaction.
Enzymes are usually proteins, hence are affected by the conditions of temperature and pH.
Enzymes are also very specific in the substrate they act upon.
Learn more about enzymes at: brainly.com/question/14577353
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