The study of how living things are classified is called dichotomous key
In the given case, most probably the top layer is of oil.
As oil is not soluble in water, it will float on the top of the water surface, in the given case it is the beaker. The oil will always float on top of the water, as it is less dense in comparison to water. The water and oil do not mix as the molecules of water are more fascinated with each other than in comparison to the molecules of oil.
As water is polar and oil is nonpolar, their molecules are not attracted to each other.
Answer:
Both animal and plant cells have these components: Cell membrane – this surrounds the cell and allows nutrients to enter and waste to leave it. Nucleus – this controls what happens in the cell. It contains DNA, the genetic information that cells need to grow and reproduce.
Science relies primarily on empiricism, the premise that knowledge should initially be acquired through observation.
Answer:
Aerobic Decomposition. When organic materials decompose in the presence of oxygen, the process is called “aerobic.” The aerobic process is most common in nature