02:28

Fossil Evidence

02:59

Adaptations

02:56

Inherited & Acquired Traits

05:22

Changes to Ecosystems Overview

01:53

What are Inherited Traits?

02:31

What are Learned Behaviors?

09:55

Food Webs and Tables

04:27

Inherited and Learned Behaviors

02:56

Inherited & Acquired Traits

05:09

Life Cycles

02:25

Ecosystems

01:39

Life Cycle of Mosquitoes

01:42

Where Do They Live?

01:56

The Leaves of Desert Plants

01:35

Food Webs: Direct Transfer of Energy

01:35

What Type of Organism is X? #2

01:26

What Type of Organism is X? #1

02:50

Food Webs: What's Missing?

01:48

Why Do We Call Them Producers?

04:59

Herbivores, Carnivores, and Omnivores Overview

04:15

Food Webs: Energy Transfer Overview

05:42

Producers, Consumers, and Decomposers Overview

03:21

Sedimentary Rocks & Fossil Fuels Overview

02:02

What Does the Fossil in Fossil Fuels Mean?

02:01

Living & Nonliving Interactions

01:16

Identifying Sedimentary Rocks

02:33

Rapid Changes Overview

01:47

Rapid Changes to Hawaii

01:56

Plants Overview

02:18

Nonliving Things Overview

01:26

Landforms #2

02:42

Renewable and Nonrenewable Resources Overview

03:17

Soils Overview

02:28

Landforms Overview

02:24

Renewable and Nonrenewable Resources

01:59

Soils Investigation: Water Retention

02:19

Water Retention Investigation

01:21

Sedimentary Rocks #1

02:15

Weathering Rocks

05:30

Weathering, Erosion, and Deposition Overview

02:08

Landforms #3

04:53

Weather vs. Climate Overview

01:17

Weather vs. Climate

01:36

Water Cycle #2

01:20

Water Cycle #1

01:23

Landforms #1

06:55

Patterns in Nature Overview

01:32

Appearance of the Moon

04:58

Measuring Weather

07:08

Solutions Overview

08:26

Percent Composition

01:42

The Appearance of Shadows #3

01:16

Planet Order #3

01:22

Where Are We Going?

04:17

Planet Order

02:45

Sun, Earth & Moon Overview

02:48

The Rotation of the Earth

04:35

The Water Cycle

01:48

Planet Order #2

01:40

The Appearance of Shadows #2