Oxygen
How do we get oxygen .
we breathe in the oxygen and breathe out carbon dioxide and then plants use the carbon dioxide to make oxygen .
How many planets are there in the solar system
Eight planets
What element is Br in the periodic table
Bromine
How long does it take for the earth to make a full rotation on its axis
Twenty four hours
What is the deepest part of the ocean
Mariana Trench
Does oxygen have a smell .
no
What is the largest planet in the solar system
Jupiter
What element is Ar on the periodic table
Argon
What is the first planet from the sun
Mercury
What percent of the Earth is water
what percentage of the atmosphere is oxygen
twenty one percent .
What is the smallest planet in our solar system
Mercury
What element is Kr on the periodic table
Krypton
What is the eighth planet from the sun
Neptune
What percent of salt water is there on the Earth
97%
How do we prevent lots of carbon dioxide in the atmosphere .
we can plant more trees and use less factories for making products .
Which star is at the center of the solar system
The sun
What element is Ga on the periodic table
Gallium
What is the fifth planet from the sun
Jupiter
How does water get in the air
The water gets in the air when it evaporates
How is carbon dioxide made .
It is made when we breathe out , or there is smoke from factories
What is the coldest place in the universe
Boomerang nebula
What element is Hg on the periodic table
mercury
What is the fourth planet from the sun
Mars
At what temperature does water freeze
32 degrees Fahrenheit