What makes something alive? It is made up of at least one cell It uses homeostasis to maintain a balance in its body (temperature, heart beat/pressure) It can adapt to its environment It uses energy It reproduces/grows

Review of terms from field study What is the difference between a habitat and a niche? What is the difference between abiotic and biotic?

Species Similar organisms that can reproduce and make fertile offspring

Population A group of organisms of a single species together at the same time and place

Community Group of different species living together

Ecosystem All the biotic and abiotic things in an area

Biosphere Where all living things on Earth exist

Food Chain A diagram that shows one pathway of energy and who eats who. The arrows represent which way the energy is flowing. It always starts with a producer! Grass  Ant  Bird  Snake The grass is a producer because it produces its own food by using the sun’s energy. Another word for producer is autotroph.

Grass  Ant  Bird  Snake The ant, bird and snake are called consumers because they have to consume other organisms for energy. Another name for a consumer is a heterotroph. Primary consumer-eats the producer (ant) Secondary consumer-eats the primary consumer (bird) Tertiary consumer- eats the secondary consumer (snake)

Practice 1. Who is the secondary consumer? How do you know? 2. Who is the autotroph? How do you know? 3. Name the heterotrophs in the food chain.

Food Webs More complex than a food chain and shows multiple pathways of energy

Practice 1. Who are the primary consumers in the food web? 2. Who are the secondary consumers?

Decomposers