Competition between plants and animals for resources in an ecosystem occurs within a population and with other populations. Which of the following statements about competition between plants is accurate?
Plants compete for water, space, and light when they are limited, because all plants need water, space, and light.
Plants do not compete for any resource, even when it is limited, because plants naturally grow in an ecosystem regardless of the conditions.
Plants compete for water and light when it is limited, but they do not compete for space, because space is unlimited for plants.
Plants compete for water and space when they are limited, but they do not compete for light, because light is never limited.