2 3 4 5 6 70

10

20

30

40

50

60

70

80

90

100

YOUR SCORE….

13/12=110 9/12=75

12/12=100 8/12=67

11/12= 92 7/12=58

10/12= 83

Today we are going to review the objectives people had the hardest time with.

3.e Food Webs 3. a Ecosystems

71.9% 70.2%

Producers are plants

Primary consumers eat plants

Secondary consumers eat primary consumers

Let’s practice…

1) Flower2) Bird that eats worms3) Giraffee4) Shark that eats fish (fish eat bugs)

Let’s practice…

Two examples of producers are:a) Flower and birdb) Cow and grassc) Squirrel and chipmunkd) Tree and orange

What kind of consumer are humans?

Looking at a food web….

Ecosystems have LOTS of producers

Producers are the most organism in an ecosystem

Decomposers break down dead organisms

They help put nutrients back in the soil

The sun is the source of energy in every ecosystem.

Let’s practice…

1) What kind of organisms breaks down dead things?

2) What is the source of energy in an ecosystem?

3) What kind of organisms is most common in an ecosystem?

Competition is when organisms need the same resource

Parasitism is when organisms attach to another organism and steal its resources

In mutualism, both animals are helped

In commensalism, one animal is helped

Let's practice...

1) A tick2) A monkey & a gorilla3) A small fish hiding in a big fish's shadow4) A flee5) Plover birds and alligators