Why is it so important not to misuse or overuse antibiotics
you answered yourself there buster.
the answer would be air.
in ecology and biology, abiotic components are non-living chemical and physical factors in the environment which affect ecosystems. biotic describes a living component of an ecosystem; for example organisms, such as plants and animals. all living things — autotrophs and heterotrophs — plants, animals, fungi, bacteria.
the answer is: they occur when the sun, moon, and earth are aligned. in spite of their name, these tides occur twice a year in the spring and fall.