Barry wants to know if the type of batteries will affect how well a circuit works. He uses four different batteries. He hooks each type of battery up to a wire and a lightbulb in a circuit. He measures the brightness of the light given off by the lightbulb.

Which of the following is a cause of a dna mutation? o a. the linking of amino acid subunits into a long chain o b. the transcription of dna into rna o c. an error in the repair of damaged dna d. the diffusion of molecules across the cell membrane submit

Some technological solutions to problems like global warming meet the specific needs and situations of local communities. an example from india involves converting the solid waste from cattle into clean-burning fuel for cooking. this reduces the amount of greenhouse gases, specifically methane and carbon dioxide, released into the environment from wood fires. when evaluating the feasibility of implementing this solution, computer models are used to weigh costs against benefits. what factor is least likely to impact the decision on adopting this technology?

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi