Researchers reported that unmarried men are more likely to suffer from clinical depression than married men. These findings were based on the marriage histories of 700 men suffering from depression and 600 men not suffering from depression. Determine the nature and scope of the conclusion the study can reach.

a. For American men, getting married will result in a decreased risk of depression.
b. Since there is no random assignment, there is no way to know that being unmarried increases the risk of depression; there may have been confounding variables.
c. Since there is no random assignment, there is no way to know that being unmarried increases the risk of depression; there may have been lurking variables.
d. For men, getting married will result in a decreased risk of depression.
e. Since the study involved only men, there is no way to know that being unmarried increases the risk of depression.

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.  

he can buy 4lbs. of live bait and 1lbs of natural bait

step-by-step explanation:

600,000,000,000, or 6e14

step-by-step explanation:

a mantle plume is an upwelling of abnormally hot rock within the earth's mantle. as the heads of mantle plumes can partly melt when they reach shallow depths, they are thought to be the cause of volcanic centers known as hotspots and probably also to have caused flood basalts.

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