What came first egg or chicken? and is tomato a vegetable or a fruit?

Which of the following is one of the four conditions necessary for natural selection to occur in a population? fewer organisms are born than the habitat can support mutation does not occur organisms have identical characteristics variation is inherited

Which of these serves as a reference for comparison during a scientific investigation? a)outcome variable (dependent variable) b) test variable (independent variable) c)control group d)hypothesis

To maintain asepsis when administering an injection, all parts of the syringe can be handled except the: