Ethanol fuel has been lauded as a viable alternative to petroleum-based fuels, offering not only less pollution to the environment, but also a sustainable source of energy. ... Most vehicles run on mixtures of gas and ethanol; this mixture is common at most gas stations across the country
ExplanatioThe flatworm seems to be the only one benefitting from the relationship because it is using the snail as a host and provides it a place to grow but the snail is being harmed by the worm while doing so. Therefore the relationship is parasitic.
