What are three types of variables in a controlled experiments?

polybius believed that rome's successes stemmed from select one: a. its constitution and mixed government. b. conservative roman values. c. its geographical diversity. d. roman worship of greek deities. e. all these answers are correct.

In an airless test-facility, a bullet is fired from a gun horizontally, at a height of 1 m. at the same time, another identical bullet is dropped from the same height. what is true about the acceleration of the two bullets while they are in flight?

Which of the following effects does low nitrogen availability most likely have on the carbon cycle? a. more carbon dioxide is taken up by plants b. carbon dioxide is trapped in the soil around plants c.

A scientist studying tigers has made many observations about where they can be found. Which scientific question could the scientist ask related to these observations? A. What is the scientific name for tigers? B.

Every time you stir a pitcher of lemonade to make the sugar dissolve faster, you are observing which of the following?

Describe the factors that form deep currents

A comet is cruising through the solar system at a speed of 50000 kilometers per hour for 4 hours time. What is the total distance traveled by the comet during this time in kilometers, miles, and light years?

A gas in a closed container is heated with 12J of energy, causing the lid of the container to rise 3m with 5N of force. What is the total change in energy?

What are illuminated objects?

During one year a population of blue jays has zero population growth. which must be true about the blue jay population at the end of the year compared to the beginning of the year?