A sample is a random, unbiased selection out of a larger group. An independent variable is one that is changed as to see how it will affect the dependent variable in an experiment.
Hope that helped.
Where is the image for the cells?
Because those are traces of life meaning that there was life living there once, that life wouldn't have been able to survive there with how Antarctica is now.
Helo i think the answer to this question is trait
Pure water has a pH of 7, while acidic solutions will ALWAYS have a pH lower that 7. ~Your Welcome
