The carbon cycle is one of many biogeochemical cycles on earth. can you identify the main features of a biogeochemical cycle and show how the carbon cycle exhibits these features? drag the terms on the left to the appropriate blanks on the right to complete the sentences. not all terms will be used. view available hint(s) living organisms photosynthesis reservoirs rocks fossil fuels the atmosphere earth cellular respiration 1. in a biogeochemical cycle, a chemical element spends time in different places, called . 2. as a chemical element moves through a biogeochemical cycle, it moves between "bio" and "geo." the "bio" in biogeochemical refers to biotic reservoirs, or . 3. the "geo" in biogeochemical refers to --specifically, to the abiotic reservoirs where a chemical element can be found. 4. in the terrestrial carbon cycle, the abiotic reservoir from which living organisms directly obtain their carbon is .

If the coding part of an mrna molecule is 1800 nucleotides (bases) in length, this molecule will contain codons and code for a polypeptide that is amino acids long.

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.

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