Levels of Organization

A biome is a large area on the Earth's surface that is defined by the types of animals and plants living there.

An ecosystem includes all of the biotic (living) things in a given area, interacting with each other, and also with their abiotic (non-living) things in their environments.

An community is defined as all of the groups of animals or plants living together in the same area or environment and usually interacting to some degree.

In biology, population is a group of organisms belonging to the same species that are living in the same area at the same time. They compete for food, mates and nesting places.

In biology, species is a group of organisms that share common attributes and share the same name. A group of animals or plants that are similar and can produce young animals or plants

In biology an organism is defined as an animal, plant, or single-celled life form.

In biology, an organ system is a group of organs that work together to perform one or more functions.

Organ Systems

In biology, organs are a group of tissues in a living organism that have been adapted to perform a

specific function.

In Biology, tissue is composed of similar cells that are specialized to perform a common function

Cells are the smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane.

Cells

Organelles are differentiated structures within a cell, such as a mitochondrion, vacuole, or chloroplast, that performs a specific function.

Organelle

A molecule is formed when two or more atoms join together chemically. A compound is a molecule that contains at least two different elements.

An atom is defined as the basic unit of matter. Atoms are all composed of protons, neutrons, and electrons.