Why is the frequency of x–linked disorders greater in males compared to females?

a. the x chromosome in a male is more likely to carry a dominant disorder.

b. the y chromosome does not carry genes to counter a defective gene on an x chromosome.

c. the y chromosome is only useful in the determination of sex.

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."