Please helpp just match the definitions to the word

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 is the ecological role of food chains and food webs

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.