Final answer:
The similarity between weathering and erosion is that they both involve the breakdown and transportation of materials by gravity, water, and ice, with b. being the correct answer.
Step-by-step explanation:
The similarity between weathering and erosion is that both are natural processes involving the breakdown and transport of earth materials. Weathering is the process that breaks down rocks and other substances at Earth's surface. Erosion is the process whereby these broken down materials are then removed and transported to other locations.
The correct answer to the question, which is "Which of the following statements describes a similarity between weathering and erosion?" is b. Both happen by gravity, water, and ice. This is true because gravity, water, and ice are fundamental forces that contribute to both processes. Gravity causes rocks and other sediments to move downhill, water can carry sediments away through rivers and streams, and ice, particularly glaciers, can grind rocks down and transport the debris.