TASK DEFINITION: You are given a science question (easy-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.
PROBLEM: Which of these is a nonliving part of a forest?
(A) Tree (B) Soil (C) Worm (D) Mushroom

SOLUTION: B

PROBLEM: Earth is about 81 times more massive than the Moon. How will the mass and weight of a rocket on the Moon compare to its mass and weight on Earth?
(A) The mass and weight will be less on the Moon. (B) The mass and weight will be greater on the Moon. (C) The mass will be the same, but its weight will be less on the Moon. (D) The mass will be the same, but its weight will be greater on the Moon.

SOLUTION: C

PROBLEM: Which characteristic of a cold-water upwelling near the coast of Northern California results in a large concentration of marine organisms?
(A) loss of thermal stability (B) high nutrient concentration (C) consistent surface-current flow rate (D) increased availability of dissolved oxygen

SOLUTION:
B