A) a slight decrease in the use of public transportation throughout the country.
Answer:
D
Explanation:
Parasites do not directly kill their host
Answer:
pharynx as it has functions in both the respiratory system and the digestive system.
Explanation:
The mechanism of enzymatic action within a single substance
Answer:
They break down dead organisms and recycle nutrients. They directly help to maintain the population sizes of different predators. They primarily eliminate toxins from the water that can harm phytoplankton.
Explanation:
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