Paleoclimatology is the study of ancient climates. A region's present day or ancient climate is determined by taking several factors into account, including characteristics of the region’s atmosphere, hydrosphere, lithosphere, and biosphere. Since direct observations of ancient climates are not available before the 19th century, paleoclimatologists rely remnants of evidence, such as sediments found in lake beds, ice cores, and tree rings. This information is then used to create mathematical climate models. Why do you think it’s important for scientists to study Earth’s past climates? What information are scientists likely to gain from investigating the Earth’s past? Since the data obtained by paleoclimatologists is not based on direct observations, can their discoveries and models be trusted? Why or why not?

Cultures of the lake of the ozarks water samples were grown on enrichment media for identification. however, these organisms are present to some degree in all samples. an important question from a clinical perspective is whether or not there is a significant increase in the fecal coliform populations that would put people's health at risk. if you were part of the team investigating this outbreak, how would you best enumerate the fecal coliform threat? view available hint(s) cultures of the lake of the ozarks water samples were grown on enrichment media for identification. however, these organisms are present to some degree in all samples. an important question from a clinical perspective is whether or not there is a significant increase in the fecal coliform populations that would put people's health at risk. if you were part of the team investigating this outbreak, how would you best enumerate the fecal coliform threat? direct microscopic counts filtration count culture serial dilution count culture plate count culture

An organism has the following traits multicellular cant photosynthesize has a skull. wht kingdom does this organism most likely belong too?

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.