If molecules move from one place to another inside of a cell, which type of communication is this?
a. intracellular, enzyme-linked receptor
or
b. intracellular, molecular signal

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?

The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false

What is responsible for the uneven heating between the poles and the equator on any given day