United states tried to overthrow a communist leader in cuba during the early 1960s, which of the following is the said communist?

a. ruben batista

b. nikita krushchev

c. ngo dinh diem

d. fidel castro

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.

The activity of the modern sample is 1.10 bq . how long does that measurement take?