How can alternative practices lead to a reduced impact on waterways? a. Alternative practices will completely eliminate changes to waterways. b. Alternative practices can completely reverse the damage already done to waterways. c. Alternative practices will allow industry greater access to waterways. d. Alternative practices can lead to a decrease in pollution, erosion, and damage to waterways. Please select the best answer from the choices provided

4. how does a phospholipid behave in water? the phosphate head does not mix with water; the fatty acid tails do. the phosphate head and the fatty acid tails mix with water. the phosphate head and the fatty acid tails do not mix with water. the phosphate head mixes with water; the fatty acid tails do not.

Nucleic acid certain protein cell membranes certain carbohydrates

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?