Because water keeps you hydrated and that's cool, but alcohol makes you drunk and that's not cool.
Commensalism is a type of symbiotic relationship between two organisms in which one benefits without affecting the other one is any way.
Examples of Commensalism for a Better Understanding of the Concept:
Cattle Egrets and Livestock.
Orchids Growing on Branches of Trees.
Remora Fish and Sharks.
Pseudoscorpions and Beetles.
Monarch Butterfly and Milkweed.
Birds Following Army Ants.
Burdock Seeds on the Fur of Passing Animals.
Barnacles and Whales.
The disability won't be passed onto his children because it(the disability) is not a genetic defect.
It was caused by an accident not passed on by his mother or father.
The correct answer is c. Genetic Variation. Bacteria are very numerous, ad random mutation of bacterial DNA generates a wide variety of change, including resistance.
