Explanation is in a file
bit.
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Their gametes would have half the number of chromsomes, so 24.
Plants use and produce both oxygen and carbon dioxide.
Insects (mosquitoes, lice, fleas, bed bugs) and ticks are able to transmit a number of diseases caused by infectious agents: viruses (chikungunya virus, yellow fever, dengue fever, etc.), bacteria (Lyme disease, plague, etc.), parasites (malaria, sleeping sickness, leishmaniasis, filariasis, etc.)