Final answer:
A cave can provide shelter, an ant can form a mutualistic relationship, and a lake can be a source of water and food for organisms.
Step-by-step explanation:
A cave, an ant, and a lake can meet the needs of an organism in different ways.
A cave can provide shelter and protection from predators and extreme weather conditions. Some organisms, such as bats, use caves as roosting sites.
An ant can help meet the needs of an organism through mutualistic relationships. For example, certain species of butterflies have larvae that form mutualistic relationships with ants. The larvae receive protection and the ants receive a carbohydrate-rich substance as an energy source.
A lake can provide a source of water, food, and habitat for aquatic organisms. It can also be a breeding ground for various species, such as frogs and water fleas.