There are about Half a Million Glaciers on Earth. Will there be another ice age? There is no one answer to this question as it is highly dependent on the factors involved. Some scientists believe that the Earth is on the brink of a new ice age, while others believe that it is already in …
A secondary pollutant is a pollutant that is produced as a by-product of another pollutant. Secondary pollutants can include chemicals, metals, and other pollutants that are created during manufacturing or transportation of goods. Which of the following best illustrates a secondary air pollutant? A secondary air pollutant is a pollutant that is emitted from a …
Low energy waves are typically shorter than high energy waves and have a lower amplitude. They are also less powerful and can travel more quickly. What is an example of a low energy wave? A low energy wave is a type of wave that is less powerful than a high energy wave. Which wave carries …
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Desert plants have thorns to protect them from predators and to deter other plants from growing in their area. Why are cactus green? There are many reasons why cactus may be green, but one of the most common is that the cactus’ spines are covered in a layer of resin. This material helps the cactus …
Washington ordered the Continental Congress to burn all of his original papers, including his diaries and letters. Can the public see the original Declaration of Independence? What Did General George Washington Order Done With His Copy? Yes, the public can see the original Declaration of Independence. How much is the Declaration of Independence worth 2021? …
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Frost looks like a thin sheet of ice that is white, clear, and has a few small spots of color. It can be very thin, or it can be very thick. Frost can be very delicate, or it can be very strong. How can you have frost if the temperature is above freezing? Frost forms …
Photosynthesis is the process that produces glucose from carbon dioxide and water. When red light is present, the sun’s heat vaporizes carbon dioxide and water, creating a high-pressure gas called carbon dioxide. This gas is then drawn up into the cell’s membrane where it is used to produce energy from the glucose molecule. Which light …
Some charged things attract because they are associated with a feeling of excitement or pleasure. These things can be things like a toy that makes you feel like you are being chased or a game that you can play with friends. Why do charges repel and attract? Charges attract because they are a representation of …
A round noun is a noun that is round in shape or has a round shape. Can round be a noun? Yes, round can be a noun. How do you teach students to round? There is no one definitive answer to this question as different educators have different methods and strategies they use to teach …
The Chart describes an early river civilization that was located in what is now the United States. What was Mesopotamia civilization? Mesopotamia was an ancient civilization that flourished in present-day Iraq and Iran. It was one of the most powerful empires in history and its culture is still studied today. What river or rivers were …
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