Greenhouse gases create an insulation layer in the atmosphere and retain heat for our planet earth. much of this gas is produced by microorganisms living in the environment and in the digestive tracts of animals. identify a greenhouse gas that can be produced primarily by microorganisms:

Exit what always affects measurement error in an experiment? a. investigator bias b. variability in nature c. instrument precision d. misreading the instrument

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them