The answer to your question is B- introduction of non-native animal species
B Potential energy! Hope it helps :)
Hind limbs will typically be stronger than forelimbs. For some animals this is because they are used for self-defense (a horse or donkey kicking, for example). Forelimbs are not going to be as strong and are often used for feeding oneself, and not intended to be as weight bearing in many mammals.
Brainliest Please!!!!!