Use the scenario to answer the question. A student is examining scientific evidence to support the following claim. “Life is possible because of the unique mixture of gases that cycle through the Earth’s spheres.” Which evidence best supports the student’s claim?

the answer is definitely c.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.