Biological Levels of Organization

All living things are made of _____.

• Tissues

• Cells

• Organs

• Organ Systems

A ______ is a group of organisms of the same species and can breed together.

Different populations of organisms create a ________.

• Group

• Biome

• Ecosystem

• Community

Ecosystems are made of ________ factors, such as plants, animals, and bacteria.

Ecosystems are made of _______ factors, such as rocks, soil, temperature, and precipitation.

Are the following listed in the correct order from least complex to most complex? Organism ----> Population ----> Community ----> Ecosystem ----> Biome ----> Biosphere

• True

• False