Question: Answer the following question given this paragraph: Scientific experiments involve controls , or subjects that are not tested during the investigation. In this way, a scientist limits the factors, or variables that can cause the results of an investigation to differ. A variable is a factor that can change over the course of an experiment. Independent variables are factors whose values are controlled by the experimenter to determine their relationship with an observed phenomenon. Dependent variables are the observed phenomenon, and change in response to the independent variable. Controlled variables are also important to identify in experiments. They are the variables that are kept constant to prevent them from influencing the effect of the independent variable on the dependent variable. Q: Controlled variables are kept what to prevent them from influencing the effects of the independent variable on the dependent variable? Choices: - mechanical - temporary - fleeting - constant A:
Answer: constant

Question: Answer the following question given this paragraph: Animals and most plants have two special chromosomes. They are called sex chromosomes . These are chromosomes that determine the sex of the organism. All of the other chromosomes are called autosomes . Genes on sex chromosomes may be inherited differently than genes on autosomes. Q: What term describes all but the sex chromosomes? Choices: - lysosomes - telomeres - sporozoans - autsomes A:
Answer: autsomes

Question: Answer the following question given this paragraph: In science, motion is defined as a change in position. An object's position is its location. Besides the wings of the hummingbird in the opening image, you can see other examples of motion in the Figure below . In each case, the position of something is changing. Q: In science, what is defined as a change in position? Choices: - gravity - speed - direction - motion A:
Answer:
motion