Based on the fossil record of the Rhynie cherts, what structures were present in the earliest vascular plants

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?

Body systems are not completely independent they integrate and work together describe one example of the integration between body systems

Draw the structure of dna nucleotide with adenine as nitrogenous base