Oxygen<span>, </span>sulfur<span>, </span>nitrogen<span>, and </span>hydrogen<span>.
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Your teacher likes to copy. Found this at https://examples.yourdictionary.com/examples-of-keystone-species.html
Grizzly bears: As predators, bears keep down the numbers of several species, like moose and elk. They also carry and deposit seeds throughout the ecosystem. Bears that eat salmon will leave their dropping and the partially eaten remains that provide nutrients such as sulfur, nitrogen and carbon to the soil.
Answer:
thoughout the experiments the ice starts showing sings of melting
Explanation:
the mutation occurred in the gametes
hope this helps :)
