Which 2 words goes in the 2 blanks?

Ryan rears sheep for their wool. recently the quantity of wool that ryan gets has diminished. this is because the new sheep are not that wooly. ryan should add which nutrient to their feed so that the sheep becomes more wooly? a. cornb. ironc. cottonseedd. vitamin a

Environmental science are unconsidered with methods to preserve natural resourcesa. trueb. false

When ash and dust begin to settle on the ground, they eventually become compacted by