History
This continent is where the earliest humans evolved.
What is Africa?
Africa and Europe are two of Earth's seven large landmasses, called these.
What are continents?
One complete rotation of Earth takes approximately this long.
What is 24 hours?
This is the name of the diagram that shows how living things are connected and grouped.
What is the Tree of Life?
These two particles are found in an atom's nucleus.
What are protons and neutrons?
Before farming, early humans survived by hunting animals and collecting wild plants. People who get their food this way are called these.
What are hunters and gatherers?
This enormous desert stretches across much of northern Africa.
What is the Sahara Desert?
This is the word for Earth's movement around the Sun.
What is revolution?
Unlike animals and fungi, plants can make their own food using sunlight through this process.
What is photosynthesis?
This chart organizes all known elements.
What is the periodic table?
The process where humans began to tame and breed plants and animals for their own use is called this.
What is domestication?
This famous river in Africa helped ancient Egyptians grow crops and build a civilization.
What is the Nile River?
This imaginary line passes through the North and South Poles.
What is Earth's axis?
Mushrooms belong to this kingdom of living things that absorb nutrients instead of making their own food.
What is the Fungi Kingdom?
This family includes helium, neon, and argon, which are generally very unreactive.
What are the noble gases?
This word describes people doing different kinds of jobs instead of everyone producing food.
What is specialization?
This tree, which grows in equatorial rainforests like in the Ivory Coast, provides the bean that is a main ingredient in a major European export.
What is the cacao tree?
This event occurs twice each year, when day and night are approximately equal in length around the world.
What is an equinox?
Bacteria are part of this group of living things that do not have a nucleus.
What are prokaryotes?
A water molecule contains two hydrogen atoms and one atom of this element.
What is oxygen?
This system uses canals or channels to bring water to crops.
What is irrigation?
This sea separates Northern Africa from Southern Europe, yet the lands along its shores share similar climates, plants, and animals.
What is the Mediterranean Sea?
Sunlight is generally more concentrated near this imaginary line around the middle of Earth.
What is the Equator?
These tiny threadlike structures help fungi absorb nutrients from their surroundings.
What are hyphae?
This type of bond forms when atoms share electrons.
What is a covalent bond?