Ecosystems
This term describes all the living things in an area, like plants and animals.
What is a biotic factor?
This force pulls objects toward the Earth.
What is gravity?
This body system helps you breathe in oxygen and breathe out carbon dioxide.
What is the respiratory system?
This large animal is the biggest land mammal on Earth.
What is an Elephant?
The smallest unit of an element that still has the properties of that element is called this.
What is an atom?
This type of organism makes its own food using sunlight.
What is a producer?
This object orbits the Earth and causes tides.
What is the moon?
This body system helps you move by working with your bones.
What is the muscular system?
This bird cannot fly but can run very fast and is the largest bird in the world.
What is an ostrich?
This part of the atom has a positive charge.
What is a proton?
Organisms like fungi and bacteria that break down dead plants and animals are called these.
What is decomposers?
This process causes day and night on Earth.
What is Earth's rotation?
This system protects your body from germs and disease.
What is the immune system?
This mammal is known for hanging upside down and sleeping during the day.
What is a bat?
A substance that speeds up a chemical reaction without being used up is called this.
What is a catalyst?
This is the role an organism plays in its ecosystem, including how it gets food and survives.
What is a niche?
This is the name of the galaxy that contains our solar system.
What is the Milky Way?
These tiny blood cells help your blood clot and stop bleeding.
What is platelets?
This animal has three hearts and blue blood.
What is an octopus?
When a substance cannot dissolve any more solute at a certain temperature, it is described as this.
What is saturated?
When one organism benefits and the other is neither helped nor harmed, this relationship is called this.
What is commensalism?
This layer of the atmosphere contains the ozone layer.
What is the stratosphere?
This is the largest organ of the human body.
What is the skin?
This animal can survive in outer space for a short time by entering a special survival state called cryptobiosis.
What is an tardigrade (or water bear)?
This measure describes how acidic or basic a solution is, using a scale from 0 to 14.
What is pH?