Which helps in the production of eggs? testosterone
estrogen
semen
fallopian tube

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?

What organ is the first to receive nutrients that have been absorbed from the digestive tract?

How does food concentration affect yeast activity