6. We know from the relative amounts of 160 and "O that global temperatures and global climate have changed over time. Why is it important for scientists to be able to explain how they know that climate has
changed over time and that they are able to repeat experiments that support this information?

Match the order of the levels of organization in nature with the correct description. example: atoms are fundamental units of matter= level 1levels- 2,3,4,5,6,7,8.now what levels are these? population consists of organismscells consist of moleculesecosystems consist of communities interacting with there environmentmolecules consist of atomsthe biosphere consist of all ecosystems on earthcommunities consists of populationorganisms consist of cells