Our living species migrated to the “environment”, established in the area, and then it will increase by number. After that we have competition and co-action resulting in the survival of fit individuals and the elimination of unfit individuals from the ecosystem.
OK the the answer you are looking for will be the excretory system because that is the system that releases waste.
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The chances of heads as a result when flipping a penny will always be 50%. Although heads came up 99 times in a row, the events that occurred before will not affect the probability of the current event in terms of a coin flip.
There are 1 out of 2 chances of it occurring or 1/2. Divide that and multiply it by 100% to get the probability in percent. So the answer will be 50%.
The answer is B.
Humans are called heterotrophs
