Answer:
kingdom
Explanation:
kingdom is the broadest taxonomical classification
Some common issues of digestive health include heartburn, cancer, irritable bowel syndrome, and lactose intolerance.
Answer:
A niche is a way that a population uses the living and nonliving resources of its habitat.
Explanation:
A niche is the role a population has in it's habitat, and the second option is the best one that matches.
Ecology is the study of the relationship between living organisms and their environment. An ecologist is someone who studies those relationships. An ecosystem is a place, such as a rotting log, a forest, or even a schoolyard, where interactions between living and non-living things occur.