Karyotypes were first performed using blood samples taken from youngsters and adults. Later, a pre- birth process called amniocentesis was developed which allowed medical researchers to obtain samples of cells from extraembryonic fluid located in the amniotic sac, which surrounds an unborn child.
Limewater, and bleach for base.
For acid: citric acid, and tartaric acid.
Answer:
Light provides … Briana notices the electrons that the water molecules release.
The answer is differentially permeable or semi-permeable, both are the same meaning. It is usually about cell membrane, and for example osmosis has to occur under this kind of membrane
b) some bacteria reduce nitrate ion
