increased warmth causing glaciers to melt
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Secondary consumers in a food web are carnivores that feed on primary consumers. Consumers are organisms that receive energy by eating other organisms. Specifically, primary consumers are those that feed on producers. Producers are those that are able to produce their own food, like plants. Meanwhile, secondary consumers, like humans, eat primary consumers such as cows.
C) a chemical change.
Chemical reactions will always convert a certain chemical(s) into one or more products.
Answer:
last one
they can contain mercury that is Very harmful to humans
