The table below shows the salmon population, in thousands of pounds, in columbia river, from 1870 to 1950. year salmon population (in thousands of pounds) 1870 10,200 1890 20,000 1915 20,500 1931 30,000 1950 10,000 based on the table, which of these is most likely the period during which a series of large hydropower units were built on the columbia river? a. between 1870 and 1890 b. between 1890 and 1915 c. between 1915 and 1931 d. between 1931 and 1950

What is the difference between sex-linked traits and autosomal traits in humans? a. sex-linked traits can only be passed from fathers to sons, while autosomal traits can be passed on from both parents to offspring of any sex. b. sex-linked traits are passed on through the x and y chromosomes, while autosomal traits are passed on through the other 22 chromosomes. c. sex-linked traits only affect females, while autosomal traits affect both males and females. d. sex-linked traits refer to genes that are on the x and y chromosomes, while autosomal traits refer to genes on all 23 chromosomes.