What makes something alive?It is made up of at least one cellIt uses homeostasis to maintain a balance in

its body (temperature, heart beat/pressure)It can adapt to its environmentIt uses energyIt reproduces/grows

Review of terms from field studyWhat is the difference between a habitat and a

niche?

What is the difference between abiotic and biotic?

SpeciesSimilar organisms that can reproduce and

make fertile offspring

PopulationA group of organisms of a single species

together at the same time and place

CommunityGroup of different species living together

EcosystemAll the biotic and abiotic things in an area

Biosphere Where all living things on Earth exist

Food ChainA 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!

GrassAntBirdSnake

The grass is a producer because it produces its own food by using the sun’s energy.

Another word for producer is autotroph.

GrassAntBirdSnake

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 WebsMore complex than a food chain and shows

multiple pathways of energy

Practice1. Who are the primary consumers in the

food web?2. Who are the secondary consumers?

Decomposers