1. How does the fireflies use its energy to ensure successful reproduction

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Which mantle is under the crust the upper mantle or the lower mantle i think it's upper let me know if i'm right

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

What is the main difference between the central nervous system (cns) and the peripheral nervous system (pns)? .the cns involves the brain and spinal cord, and the pns involves the body nerves. the cns involves the body nerves, and the pns involves the brain and spinal cord. the cns involves sensory neurons, and the pns involves motor neurons. the cns involves motor neurons, and the pns involves sensory neurons.