Acommercial industry employs scientists who conduct tests in order to develop new products for sale. as the push for new summer products designed to ward off mosquitoes begins, the scientists test rainforest plants for the presence of what?

The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

Physical characteristics of down syndrome