The following are biogeochemical cycles, important for recycling and balancing earth's materials that are essential to life. hydrologic, rock, and tectonic cycles hydrologic, carbon, phosphorus, and nitrogen cycles rock, phosphorus, carbon, and nitrogen cycles tectonic, hydrologic, and carbon cycles

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d

Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the human x chromosome. the patients have muscles that weaken over time because they have absent or decreased dystrophin, a muscle protein. they rarely live past their twenties. how likely is it for a woman to have this condition? a) women can never have this condition.b) one-fourth of the daughters of an affected man would have this condition.c) one-half of the daughters of an affected father and a carrier mother could have this condition.d) only if a woman is xxx could she have this condition.

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.