Sedimentary rocks found high in the himalayan mountains have been found with fossils of clams and other marine life. what does this indicate about the origin of the himalayan mountains? a) there was once a large ocean at top of the mountains. b) animals that now live on the mountains once lived under water. c) the earth's crust that formed these mountains was once covered with an ocean. d) continental drift resulted two tectonic moving closer to each other over time.

they include patterns; cause and effect; scale, proportion, and quantity; systems and system models; energy and matter; structure and function; and stability and change.

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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.