Repair and Maintenance. Protein is termed the building block of the body. ...
Energy. Protein is a major source of energy. ...
Hormones. Protein is involved in the creation of some hormones. ...
Answer:
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The genes that survive and flourish in a species are the strong ones. Strong genes evolve into the next generation, while weaker ones die.
Prokaryotes are organisms that hav only one cell and one nucleus while while Eukaryotes are organisms that hav many cells and many nuclei.
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Explanation:
As Earth cooled, an atmosphere formed mainly from gases spewed from volcanoes. It included hydrogen sulfide, methane, and ten to 200 times as much carbon dioxide as today's atmosphere. After about half a billion years, Earth's surface cooled and solidified enough for water to collect on it.
Oxygen plays a critical role in respiration, the energy-producing chemistry that drives the metabolisms of most living things. We humans, along with many other creatures, need oxygen in the air we breathe to stay alive. Oxygen is generated during photosynthesis by plants and many types of microbes.
