Why is cell differentation an important part of develipment

Which pedigree symbol is used to represent a female carrier of a recessive x-linked trait? поө0 || save and exit submit

What is the relation ship between structure and function in an organism

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation