The kind of farming associated with less soil erosion is No-till Farming. In No-Till Farming, there are countess benefits to the land. First and foremost, by leaving the soil mostly undisturbed and leaving high levels of crop residues behind, soil erosion is almost eliminated through no-till farming.
I do not think it's more common in a certain group. It's one of the most common genetic birth defects. It's estimated that 1 in 700 babies are born with down syndrome (this is about 6,000). There are over 400,000 people in the US with Down syndrome.
Answer:
Law
Explanation:
This is Newton's third law: "For every action, there is an equal and opposite reaction."
A pair of organisms which would represent a predator-prey relationship could be for example wolves and deer. The wolf in this case is of course the predator while the deer plays the role of prey. Wolves hunt deer and the latter then have to try and run away from being eaten by wolves.
I believe the answer is D) Eukarya