A coral reef is a complex [ecosystem] of calcium carbonate shells that are home to microbes, algae, invertebrates, and fishes, and its high productivity helps provide great species richness.
Explanation:
Production. According to the U.S. Energy Information Administration, most of the nation's electricity was generated by natural gas, coal, and nuclear energy in 2018. Electricity is also produced from renewable sources such as hydropower, biomass, wind, geothermal, and solar power.
<span>Vaccines help develop immunity by imitating an infection. but it does cause the immune system to produce T-lymphocytes and antibodies. Sometimes, after getting a vaccine, the imitation infection can cause minor symptoms, such as fever.</span>
D. Man-Made is the answer
Answer:
B. Whale!
Explanation:
Snail, crawfish, and lily's all live in freshwater.
While D makes no sense water doesn't live anywhere.
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