Which of the following statements about matter is true? Mass and matter are always the same. Matter is made up of atoms and has mass. Mass can decrease while matter increases. Matter does not exist in the biosphere.

An apple weighs at 1N. the net force on the apple when it is in free fall is? a. 0N b. 0.1N c. 1N d. 10N e. none of the above

What is the best angle of projection for a projectile to reach the longest range?

True or False: A cross product is an equation which states that two ratios are equal.

Sick person develops a fever physical or chemical

What is the relationship between DNA and RNA? A. Both DNA and RNA contain the set of instructions for the cell. B. Both RNA and DNA send information from the nucleus out to other parts of the cell. C.

Hundreds of millions of years ago, all the continents on Earth were connected to form a giant "supercontinent" called Pangaea. How might ocean currents have differed during the time of Pangaea compared to today? Explain your answer.

You have a ruler that is marked to the nearest half centimeter. Which of these measurements is written with the correct amount of precision? A) 2.0cm B) 3.14cm C) 5 cm D) 100cm

What kind of information can you gather from a stars spectrum

Gamma rays are waves of energy that have no charge. a. True b. False

Why is the weight of an object more on Earth than the Moon