In 1865, a biologist, st. george jackson mivart, constructed an evolutionary tree of existing primate species with many branches based on analysis of spinal columns. but to his dismay, another tree based on limb comparison was quite different. which of the following analyses would be best to include today to determine which tree is more accurate?
a) comparison of genes that control developmentb) comparison of eyes of primatesc) comparison of dna sequences of primatesd) examination of evolutionary trees constructed by others.

What was the land like over 500 million years ago? what was under the sea?

Environmental impacts on evolution : mastery test

Where does all the water go? according to the environmental protection agency (epa), in a typical wetland environment, 39% of the water is outflow; 46% is seepage; 7% evaporates; and 8% remains as water volume in the ecosystem (reference: united states environmental protection agency case studies report 832-r-93-005). chloride compounds as residuals from residential areas are a problem for wetlands. suppose that in a particular wetland environment the following concentrations (mg/l) of chloride compounds were found: outflow, 60.4; seepage, 73.7; remaining due to evaporation, 26.4; in the water volume, 46.8. (a) compute the weighted average of chlorine compound concentration (mg/l) for this ecological system. (round your answer to one decimal place.) mg/l (b) suppose the epa has established an average chlorine compound concentration target of no more than 58 mg/l. does this wetlands system meet the target standard for chlorine compound concentration? yes. the average chlorine compound concentration (mg/l) is too high. yes. the average chlorine compound concentration (mg/l) is lower than the target. no. the average chlorine compound concentration (mg/l) is lower than the target. no. the average chlorine compound concentration (mg/l) is too high.