describe the design solution engineers and scientists devolped to prevent contamination of cleaveland drinking water. why did their solution need to address both sub-problems equally? so they can figure out what is jn the lake that they can't see.

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?

Abnormal softening of a gland is known as

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?