In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

The circulatory system brings oxygen to the body from where? (A) The chest (B) The brain (C) The feet (D) The stomach
A

Adding something poisonous to an environment and harming it is called what? (A) dirtying (B) liking (C) cleaning (D) observing
A

as dryness increases in an environment, biodiversity (A) increases (B) decreases (C) stays the same (D) begins

B