How does magnetism play a role with the earth itself

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous

Make a claim about the factors that cause inherited genetic variations within populations. also make a claim about the effects of mutations.