You need air flowing through the boat. I second alternative is to get a smoke detector of some kind.
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Answer:
Ribosomes here is your answer
Carrying capacity is the maximum amount of organisms a certain ecosystem can sustain with the resources available in a given ecosystem.
Factors that could either increase or decrease the K, carry capacity, would be: drastic weather causing depletion of resources, decreases in competition, etc.
The answer is B. both need food and air
The most applicable answer would be D. Energy