Awidow's peak is a v-shaped area of the hairline in the center of the forehead. the allele for having a widow's peak is dominant to the allele for not having a widow's peak. if two parents do not have widow's peaks, what is the probability that their child will have a widow's peak?

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?