Random question?

A "widow's peak" hairline in humans is coded by the dominant allele W. A straight hairline is coded by the recessive allele w. A man with a homozygous dominant WW produces a zygote with a woman with a heterozygous dominant Ww for the trait. Which allele combinations could occur in the zygote?

Random question?

A student boils 100 grams of water to form water vapor (gas). What method should the student use to determine that the mass of the water vapor is equal to 100 grams?

Random question?

Which is a problem with using wind turbines to produce energy?

Random question?
The crust, the mantle, and the core are structures of Earth. Which description is a feature of Earth's mantle?