When salt and sugar dissolve in water it is a physical change. The chemical makeup of the salt and sugar are not changed.
Physical change
According to the Doppler effect, the sound of a police car siren is louder and high pitched as it approaches the observer.
The viral capsid and envelope <span>plays a role in attaching a virion to the host cell.</span>
Answer:B, D
Explanation:
When the roller coaster starts flying down the hill, it gains kinetic energy and loses potential energy.
A stamen is the name for male reproductive parts of the flower which consists of an <u>Anther and Filament</u>.