List the most abundant ions in seawater, from most to least abundant
What will be an ideal response?
The most abundant ions in seawater are (in order of most abundant to least abundant): chloride, sodium, sulfate, magnesium, calcium, potassium, and bicarbonate.
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A test cross can be used to do all of the following except
A. determine whether an individual that displays a dominant phenotype is homozygous for the trait. B. determine whether an individual that displays a dominant phenotype is heterozygous for the trait. C. gather genotype information from phenotype information. D. identify the chromosome on which a gene is located.
The onset of a given epidemic is indicated by a sharp rise in the number of cases reported daily over a brief interval. This indicates that the mode of transmission is
A) host to host. B) a common source. C) insect vector. D) mechanical vector.
An organ must contain at least:
A. two different tissue types. B. two different cell types. C. all four of the tissue types. D. connective tissue. E. two different muscle types.
Select the best choice for the following statements in reference to the four groups of protists listed below.
A. This group includes the diatoms. B. The common amoeba, Amoeba proteus, is a member of this group. C. The slime molds are members of this group. D. The malarial parasite Plasmodium is a member of this group. E. Parameciumbelongs to this group. F.