Answer: A closed circulatory system and an excretory system consisting of tubular nephridia
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ATP contains energy in the chemical bonds between its phosphate groups, best explains how the structure of ATP helps provide energy to the cell.
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As the generations are increasing or gets much over time, we have a more likelihood of seeing a response to natural selections as the favourable alleles are going to be moved from one generation to the next while those that are not favourable would be eliminated over generations.
If the new host gives allowance for early reproduction and ease of access then the generations each year would rise.
