Biology, 18.03.2021 02:10 mshields1994
Where do these metals originate? Science students were tasked with completing the Venn diagram to distinguish between natural occurrences and
occurrences due to human activities. There was great debate among the students. Can you help them out? Where should these metals be placed and
why?
A) Heavy metals occur naturally in underground rocks and soils and leach into groundwater.
B) Human activities such as mining and construction can release large amounts of heavy metals into nearby ground water sources.
Increased urbanization and the associated human activities are to blame for an increased levels of heavy metals, in our waterways.
Heavy metals occur both naturally and as a result of human activities. They occur natural in rocks and soil and are the by-products of
D)
a multitude of human activities
Answers: 1
Biology, 21.06.2019 20:20
Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar. the following chemical equation shows the combustion of ethane. balance the equation by filling in the coefficients. c2h6 + o2 → co2 + h2o
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What element does susan b. anthony include in this passage to strengthen her argument?
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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.
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Biology, 22.06.2019 16:00
Which areas of earth receive the most precipitation on average? a. tropics b. temperate zones c. regions near 30? n and s latitudes d. polar zones 1
Answers: 1
Where do these metals originate? Science students were tasked with completing the Venn diagram to di...
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