<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:
Biodiversity is the amount of variety of life on Earth.
Explanation:
Biodiversity boosts ecosystem productivity where each species, no matter how small, it has an important role to play.
<u>For example,</u>
a larger number of plant species means a greater variety of crops. Greater species diversity ensures natural sustainability for all forms of life.
FALSE, Atom
An atom is the smallest particle of an element, having the same chemical properties as the bulk element.
The answer is A. random gene pool changes in small population.
