What is deffirencetiant in afferince and effirince?

Which ingredient supplies carbon? Why it is important to remember theories that are discredited? How do theories become a fact? What is the general meaning of the term forecasted? What is a model built using software that you can see on a computer screen? What are the procedures of a scientific experiment? How much does a dinner plate weigh? How are seeds of a sycamore tree dispersed? Why does a pendulum move from side to side? What are the advantages of identifying an organisms by scientific name? Why are fossil fuel and biomass useful as source of energy? How can a human eat food and turn it into muscle? Why coloured light produce colour by addition and pigment produce by subtraction? What can solar power energy be used for? How many kilograms is 19620 Newton? How did the finches help Darwin to formulate his theory of natural selection and evolution? What word describes a solution that cannot dissolve any more solid? What was a weakness in Darwins theory of evolution? How kilometers in ten miles? Which describes the best approach when conducting a scientific experiment?