Studying the organization of life All living things are connected.

Environment The environment is anything that affects that organism. This includes two main groups: – Abiotic – Biotic

Abiotic Factors Abiotic factors are parts of the environment that are not alive. They are the physical factors such as water, soil, light, and temperature. The nonliving factors that effect living things

Biotic Factors Biotic factors are parts of the environment that are alive and interact with each other The living things in the environment. Ex: plants and animals.

Biotics (alive)

Abiotics (not alive) *In science, the addition of an “A” to the beginning of a word usually means “not” or “opposite of”

Levels of Organization atom – the smallest part of an atom protons, neutrons, and electrons molecule – smallest part of a compound with unique properties tissues – group of similar cells performing a job or function

Levels of Organization organ – The tissues organized into brain, heart, lungs, stomach, etc. organ system – Organs working together (circulatory, digestive, etc) organism – Individual living thing (person, dog, plant, etc)

Levels of Organization population – a group of one kind of organism (species) in an area that can interbreed & make fertile offspring. community – Several populations of organisms in an area (animals in a zoo) ecosystem – All living (biotic) and nonliving (abiotic) parts of an environment.

Agenda Create a graphic organizer for the following words: atom molecule tissues organ organ system organism population community ecosystem. – Hint : Use your textbook to define the above words.