A book weighing 5N (newtons – force/weight is measured in newtons – yes, weight is a measure of force) sits on a table. What is the sum of all the forces acting on the book? Explain.

If scientists are wrong about earth's age based on radioactive material and the decay rates are really much faster, how would nuclear power plants be affected?

Match the description of each organism to the appropriate category

Will mark you as ! keiko’s teacher was discussing the theory of endosymbiosis. she asked keiko to mark the organelles in the diagram that most closely resembled prokaryotes. which organelles should keiko mark? * the first image is the question and the second image is some information to you answer the !