When the environment changes, differences between individuals allow some plants and animals to survive while others die or move to new locations. which of these statements best describes how this happens? a. environmental changes casue variations in animals that lead to adaptations. b. all animals are able to survive when the environment changes, which leads to their variations, and adaptationsc) animals have variations, and when the environment changes, these variations allow populations to adapt and survive. d. animals have different adaptations that allow them to survive when the environment changes, which leads to variation.