Two identical bean plants are grown next to eachother they recive the same amount of water and sunlight one plant is cover with a green light filtering plastic cover and the other with a clear plastic cover measurements of the bean plants heights are recorded every day for two weeks

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.