What type of symbiosis is benificial of for both organisms?

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 does the positioning of transcription factors determine?

Which anatomical plane is the only one that could not show both the sternal region and vertebral region