What is the system used in science?

What is a adgative? What does blotter paper contain that regular paper does not? Why is it important to be aware of the radiation found in various places in a community? Which sentence best describes a scientific theory a- It can never change It can change every time it is tested It can be proven conclusively It is well-tested and explains a wide range of observation? How many variables can you test in a single experiment? What are the different forms of a gene that decide a characteristic known as? What is a well tested explanation that unifies a broad range of observations and hypothesis? What are false claims on a product? What precautions must be kept in mind while sowing seeds in a field? Why did the human being invent stuff? What should a research paper cover sheet look like? How many plastic bottles do Americans throw away every hour and from where did the data come? Experiments that involve two tests that are identical except for one factor? What is educational realism? What happens when solids and liquids are heated or cooled? How many square feet is a circle with a radius of 3000 feet? Define passive transport? What is an example of traits that you would expect to inherit if Lamarck's explanation of evolution were correct? What it the density of Poplar? Can hot water dissolve more salt then room temperature water?