Hugo is testing the idea that moths are attracted to the heat of campfires. he watches a three-foot by three-foot area around an unlit camp fire for one hour and counts how many moths enter the area. he then lights the fire and counts how many moths enter the area for another hour. hugo finds that 5 moths entered the area before the fire was lit, but 26 moths entered it after it was lit. he concludes that moths are attracted to the heat of fires. which of these is an alternative explanation for hugo's results?

At which location in earth’s interior does the top density continue to increase as thickness decreases?

Cold case files recently began re-investigating an old murder case. the murder took place in the park; a young man, james, was hit over the head with a brick and killed. police suspected the jealous former boyfriend of james' wife, karen. whoever killed james may have washed their hands in a near-by bird bath as detectives found blood in the bird bath. since the murder took place before dna fingerprinting was available, the suspected killer, ronnie, went free. detectives are now reviewing the blood evidence using dna fingerprinting. based on the dna fingerprints of all possible suspects, who is james' killer?

Imagine you are introducing the lac operan and the trp operon to students who have never learned about it before. complete the table to compare the similarities and differences between the two operons