Les - your class is collecting macroinvertebrates (insects & other small animals found in water) to determine the pollution level in
a local creek. each macroinvertebrate that you collect has a 'pollution rating' between 0 and 10. a rating of o means the animal
is usually found in very polluted water. a rating of 10 means it is only found in very clean water. a total of 100 insects are caught,
and the total number of points is added up.
based on the stream ecology class notebook, what conclusion can you draw about the creek?

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?

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

Make a claim about the factors that cause inherited genetic variations within populations. also make a claim about the effects of mutations.