A medium is a substance or material that carries the wave. Sounds waves need a medium in order to travel through a wave to help it travel as it cannot travel through a vacuum. Mechanical waves need a medium to transport energy.
The difference is intensity is assessed using a special scale and magnitude is measure of the size ( for example a earthquake)
Answer:
True
Explanation:
When the periodic time increases the frequency is lower.
Natural selection is the process of organisms adapting to their environments over time.
<u>Explanation:
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Natural selection refers the process to various survival and multiplication of organisms due to environmental properties. For example peacock, pepper moth, etc. These lead to evolutionary changes in which individual with specific traits has higher survival or reproduction than individuals in other populations and passes on these hereditary genetic traits to their offspring.
A process in which organisms are well suited to the surroundings than others generate more offspring. Due to this process, the percentage of organisms that adapt to the environment is increasing with each generation.
