Ascientist is testing the effectiveness of drug x on cancer. she gives a small amount of the drug to mice that have cancer. she gives each mouse a different amount from 1 to 10 grams, and then measures the size of the tumor in each mouse before the drugs and two weeks after the drugs. she gives one of the mice sugar instead of drug x. what is her dependent variable in this experiment?

The correct answer is sugar and Drug X.

Explanation:

A variable whose influence or impact is examined on a dependent variable is known as an independent variable. In the given case, the concentration of drug X given to the mice varies just in order to understand the influence generated by the drug on mice. Similarly, one mouse is given sugar in place of Drug X in order to examine the influence of sugar on mice with cancer. Thus, in the given case, there are two independent variables used, that is, Drug X and sugar.

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

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