Which simple machines combine to make scissors? a. one lever and two wedges b. two levers and two wedges c. one inclined plane and two wedges d. two inclined planes and two wedges

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13

People with one sickle cell allele are not likely to get malaria. what is this an example of?