Plz help • Motor driven plow

• Electric lights

• Sewer system

• Vaccines

What do these technologies have in common?
A.
They are all very expensive to make.
B.
They all help improve quality of life.
C.
They are only used to help poor people.
D.
They are all made from natural resources.

Which system revise and send electrical signals throughout the body

Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?

Ayoung boy has been found and police are trying to locate his family they take a dna sample from him and begin collec dna samples from families who have missing children if police use dna samples only from the fathers, which type of dn technology can they use to identify the boy's parent? y-chromosome analysis omtdna (mitochondrial dna) analysis vntrs (variable tandem repeats) o pcr (polymerase chain reaction) analysis