This is the joint between two neurons that allows chemical and electrical signals to pass through.
What is a synapse?
This biome covers most of North America.
What is grasslands?
This organelle contains DNA and controls many functions of the cell.
What is the nucleus?
This thin, flexible covering made of fat and protein surrounds the cell.
What is the cell membrane?
This matter makes up stars.
What is plasma?
This is the boundary that separates the mesosphere and the thermosphere.
What is the mesopause?
No!
This thin blanket of gases protects the Earth.
What is the atmosphere?
This galaxy has 200-400 billion stars.
What is the Milky Way?
This is the number of phases of the moon.
What is 8?
This jellylike material is found between the cell membrane and the nucleus, and houses the organelles.
What is the cytoplasm?
This is the number of stars in our solar system.
What is 1?
Does some yogurt have bacteria?
Yes!
Auroras are in this layer of the atmosphere.
What is the thermosphere?
This is the symbol for chlorine.
What is "Cl"?
This nebula contains many star-forming regions such as the "Pillars of Creation".
What is the Eagle Nebula?
This phase of the moon looks like no moon is in the sky (even though there is!).
What is the new moon?
This element burns immediately when exposed to air.
What is phosphorus?
In this phase only a quarter of the moon is visible.
What is first or last quarter?
This is the common name of the tree Quercus Phellos.
What is willow oak?
This gas has no color or smell and makes up most of the air you breathe.
What is carbon?
This is the age of the universe.
What is 13.8 billion years?
This is the percentage of Dark Matter in the universe.
What is 84.5%?
This biome name means "treeless" in Finnish.
What is tundra?
What is vinegar?