I. Facilitated diffusion is your answer.
Active transport <span>is the movement of molecules across a cell membrane into a region of higher concentration, this process requires energy. Both osmosis and diffusion are passive transportations which means that they don't require energy.
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c. Mutualistic: both the bacteria and the bean plant benefit. Mutualism or symbiosis refers to the relationship between two organism where both are benefited. The bacteria convert nitrogen in the environment for the bean plant to use, in exchange for carbohydrates and a place for bacteria to grow, which is in the nodules of the plant.
Answer:
Idea models represent the premise of the idea, but the model is just that, it's a simpler form of the idea.
In reality idea can vary on how complex or simple they can be and models are usually made to represent ideas that are too complex to just make or say.