a star expels most of its outer material until only the hot core remains, which then settles down to become a young a white dwarf
The rapid release of air/ gas bubbles during cooling
<em>A megaphone used by a cheerleader can allow people on the opposite side of a field to hear her better because;</em>
D. Solid objects can change the direction of sound waves; megaphones allow users to determine the general direction of the sound.
<u>Determination of the general direction of the sound lessens its dispersion and thus, it reaches the observers at a higher intensity, hence it being louder.</u>
Answer:
mitochondria
Explanation:
Mitochondria is known as power house of a cell