Explanation:
Invading infectious diseases can, in theory, lead to the extinction of host populations, particularly if reservoir species are present or if disease transmission is frequency-dependent.
Answer:
plants are the main producer in a forest
Explanation:
because if the herbivores don't get their food then they die, and if they die carnivores die and there is no more forest
2. Endothermic, absorbing
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The four major classes of organic compounds are nucleic acids, lipids, carbohydrates and proteins.