Question: Avalley is formed by a river flowing, and canyon formed as a consequence of river erosion. Given these facts, a valley is formed by among the following options: - Sediment - a solute - calcite - seismic activity - glaciation - weathering - erosion - loose soil
Answer: erosion

Question: Animals require water for survival, and water fills the oceans of the world up to sea-level making it a liquid, a type of fluid. Given these facts, what requires a type of fluid to survive among the following options: - snail - wind - tapeworms - mussels - stones - animals - sand - Nematoda
Answer: animals

Question: Protein is used to repair cells by the human body, and most foods contain protein. Given these facts, what is used to repair cells in the human body among the following options: - DNA - food - PDAs - fibers - fats - copper - corn - RNA
Answer:
food