Solutions that have more H+ ions are acids.
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.
Organic chemicals can enter the grond water and contaminate private wells through waste disposal etc.
