The taxon species may be defined by reproductive isolation and variation morphology dichotomy

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?

How do the evolutionary chart and the video support the claim that all living things are made up of cells?

Conservationists to restore ecosystems. which activity will positively affect the abiotic conditions of an ecosystem?