The biosphere is the highest level of organization in the hierarchy of life on earth. rank the levels of organization from most complex to simplest. a) ecosystems > communities > populations > organisms b) organisms > populations > communities > ecosystems c) ecosystems > organisms > communities > populations d) populations > communities > ecosystems > organisms cycles connect biological, geological and chemical aspects of organisms in a biosphere. a) ecological b) hydrological c) transpiration d) biogeochemical which example best illustrates the difference between a community and a population? a) the two terms are interchangeable, a population is a community. b) all the people in a town would be a community; all their cattle would be a population. c) all the people in a town would be a community; all the people in a country would be a population. d) all the different animals in a national park would be a community; all of the brown bears in the park would be a population.

Melissa lives in a town called greendale. she discovers that when she lights a match and holds it near her kitchen faucet, the little flame grows into a larger fire. melissa is surprised because she thought the water would extinguish the flame rather than ignite it further. her mother tells her that the water might be contaminated with dissolved methane, a primary component in natural gas. melissa investigates the matter and finds that cases of methane contamination started shortly after a company began fracking for natural gas in the area. based on this information, which three statements are plausible consequences of fracking in greendale?

On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.

Which feature would you expect to find in a population in which sexual selection depends on male competition?