What did darwin call selective breeding

What type of nuclear decay causes the atomic number of an element to increase by 1?

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value