Our earth-0/washington-dc-standards?dictionary=earth&did=771" onclick="getAsistant(this,event,771,'earth');return false;" style="color:#009000;">Earth: An Introduction
Our earth-0/washington-dc-standards?dictionary=earth&did=771" onclick="getAsistant(this,event,771,'earth');return false;" style="color:#009000;">Earth is a earth-0/washington-dc-standards?dictionary=planet&did=772" onclick="getAsistant(this,event,772,'planet');return false;" style="color:#009000;">planet in the earth-0/washington-dc-standards?dictionary=solar+system&did=773" onclick="getAsistant(this,event,773,'solar system');return false;" style="color:#009000;">solar system, and it is the only known earth-0/washington-dc-standards?dictionary=planet&did=772" onclick="getAsistant(this,event,772,'planet');return false;" style="color:#009000;">planet that supports earth-0/washington-dc-standards?dictionary=life&did=774" onclick="getAsistant(this,event,774,'life');return false;" style="color:#009000;">life. It is the earth-0/washington-dc-standards?dictionary=third+planet&did=775" onclick="getAsistant(this,event,775,'third planet');return false;" style="color:#009000;">third planet from the earth-0/washington-dc-standards?dictionary=sun&did=776" onclick="getAsistant(this,event,776,'sun');return false;" style="color:#009000;">sun and is the fifth largest earth-0/washington-dc-standards?dictionary=planet&did=772" onclick="getAsistant(this,event,772,'planet');return false;" style="color:#009000;">planet in the earth-0/washington-dc-standards?dictionary=solar+system&did=773" onclick="getAsistant(this,event,773,'solar system');return false;" style="color:#009000;">solar system. The earth-0/washington-dc-standards?dictionary=earth&did=771" onclick="getAsistant(this,event,771,'earth');return false;" style="color:#009000;">Earth is divided into several layers, including the earth-0/washington-dc-standards?dictionary=crust&did=777" onclick="getAsistant(this,event,777,'crust');return false;" style="color:#009000;">crust, earth-0/washington-dc-standards?dictionary=mantle&did=778" onclick="getAsistant(this,event,778,'mantle');return false;" style="color:#009000;">mantle, and earth-0/washington-dc-standards?dictionary=core&did=779" onclick="getAsistant(this,event,779,'core');return false;" style="color:#009000;">core. It is also home to a wide variety of earth-0/washington-dc-standards?dictionary=ecosystems&did=780" onclick="getAsistant(this,event,780,'ecosystems');return false;" style="color:#009000;">ecosystems, including earth-0/washington-dc-standards?dictionary=deserts&did=781" onclick="getAsistant(this,event,781,'deserts');return false;" style="color:#009000;">deserts, earth-0/washington-dc-standards?dictionary=forests&did=782" onclick="getAsistant(this,event,782,'forests');return false;" style="color:#009000;">forests, and earth-0/washington-dc-standards?dictionary=oceans&did=783" onclick="getAsistant(this,event,783,'oceans');return false;" style="color:#009000;">oceans.
Key Concepts to Understand:
Layers of the Earth: The earth-0/washington-dc-standards?dictionary=earth&did=771" onclick="getAsistant(this,event,771,'earth');return false;" style="color:#009000;">Earth is made up of several layers, including the earth-0/washington-dc-standards?dictionary=crust&did=777" onclick="getAsistant(this,event,777,'crust');return false;" style="color:#009000;">crust, earth-0/washington-dc-standards?dictionary=mantle&did=778" onclick="getAsistant(this,event,778,'mantle');return false;" style="color:#009000;">mantle, and earth-0/washington-dc-standards?dictionary=core&did=779" onclick="getAsistant(this,event,779,'core');return false;" style="color:#009000;">core. Each layer has its own unique properties and plays a crucial role in supporting earth-0/washington-dc-standards?dictionary=life&did=774" onclick="getAsistant(this,event,774,'life');return false;" style="color:#009000;">life on earth-0/washington-dc-standards?dictionary=earth&did=771" onclick="getAsistant(this,event,771,'earth');return false;" style="color:#009000;">Earth.
earth-0/washington-dc-standards?dictionary=ecosystems&did=780" onclick="getAsistant(this,event,780,'ecosystems');return false;" style="color:#009000;">Ecosystems:earth-0/washington-dc-standards?dictionary=earth&did=771" onclick="getAsistant(this,event,771,'earth');return false;" style="color:#009000;">Earth is home to a wide variety of earth-0/washington-dc-standards?dictionary=ecosystems&did=780" onclick="getAsistant(this,event,780,'ecosystems');return false;" style="color:#009000;">ecosystems, each with its own unique plants, animals, and earth-0/washington-dc-standards?dictionary=climate&did=786" onclick="getAsistant(this,event,786,'climate');return false;" style="color:#009000;">climate. Understanding earth-0/washington-dc-standards?dictionary=ecosystems&did=780" onclick="getAsistant(this,event,780,'ecosystems');return false;" style="color:#009000;">ecosystems is essential to understanding the diversity of earth-0/washington-dc-standards?dictionary=life&did=774" onclick="getAsistant(this,event,774,'life');return false;" style="color:#009000;">life on earth-0/washington-dc-standards?dictionary=earth&did=771" onclick="getAsistant(this,event,771,'earth');return false;" style="color:#009000;">Earth.
Importance of earth-0/washington-dc-standards?dictionary=earth&did=771" onclick="getAsistant(this,event,771,'earth');return false;" style="color:#009000;">Earth: Studying the earth-0/washington-dc-standards?dictionary=earth&did=771" onclick="getAsistant(this,event,771,'earth');return false;" style="color:#009000;">Earth is important for understanding the earth-0/washington-dc-standards?dictionary=environment&did=923" onclick="getAsistant(this,event,923,'environment');return false;" style="color:#009000;">environment, earth-0/washington-dc-standards?dictionary=climate&did=786" onclick="getAsistant(this,event,786,'climate');return false;" style="color:#009000;">climate, and earth-0/washington-dc-standards?dictionary=natural+resources&did=788" onclick="getAsistant(this,event,788,'natural resources');return false;" style="color:#009000;">natural resources that sustain earth-0/washington-dc-standards?dictionary=life&did=774" onclick="getAsistant(this,event,774,'life');return false;" style="color:#009000;">life on the earth-0/washington-dc-standards?dictionary=planet&did=772" onclick="getAsistant(this,event,772,'planet');return false;" style="color:#009000;">planet.
Study Guide:
What are the three main layers of the Earth?
Describe one earth-0/washington-dc-standards?dictionary=ecosystem&did=1077" onclick="getAsistant(this,event,1077,'ecosystem');return false;" style="color:#009000;">ecosystem found on earth-0/washington-dc-standards?dictionary=earth&did=771" onclick="getAsistant(this,event,771,'earth');return false;" style="color:#009000;">Earth and the plants and animals that earth-0/washington-dc-standards?dictionary=live+there&did=787" onclick="getAsistant(this,event,787,'live there');return false;" style="color:#009000;">live there.
Why is it important to study the earth-0/washington-dc-standards?dictionary=earth&did=771" onclick="getAsistant(this,event,771,'earth');return false;" style="color:#009000;">Earth and its earth-0/washington-dc-standards?dictionary=natural+resources&did=788" onclick="getAsistant(this,event,788,'natural resources');return false;" style="color:#009000;">natural resources?