What are the dependent variables of the pond experiment

Which of the following can be reduced by the use of renewable energy sources? a. social costs b. economic costs c. environmental costs d. all of the above select the best answer from the choices provided a b c d

What is any method of measuring the age of an object or event in years, such as using atomic half-life?

Which diagram best represents the chromosomes that would be found in a two new skin cells produced as a result of this process?