Only one sound blocking material should tested at once and the sound will vary on how much and what kind of materail you use.
<span>d. Not all rainforests are tropical rainforests.</span>
Not all rainforests are tropical rainforests because some are distinguishable from the others and these rainforests has its own designated climate that allows the specific species of plants to grow and thrive in that environment.
Flooding is the term used to characterize the process that occurs when the waters of a river overflow due to rain and occupy the area next to the river, called the river plain. It can have natural or anthropogenic causes and affect vulnerable populations more often.
<h3>What is Biotic and Abiotic?</h3>
The biotic components are all the living things that live in a certain place, while the abiotic components are all the physical, chemical and geological factors of the environment such as water, light, soil, humidity, temperature, nutrients etc.
With this information, we can conclude that A flood can wash away important abiotic factors, such as soil and rocks, that certain biotic factors need to survive, thus flooding affects the ecology of affected regions.
Learn more about flood in brainly.com/question/13974555
#SPJ1
The answer to this is the Immune System.
The Immune system is made up of a network of cells and tissues and organs that work together to protect the body. The white blood cells (also known as Leukocytes) is part of the immune system, they help destroy disease causing organisms or substances.
That is why when you fall ill and like a few days later you are all better, that is because of the immune system.
Sometimes when somebody has a weak immune system they fall ill more easily and could die because the bacteria that makes you sick isn't being destroyed by the immune system. Sometimes the person has to go to the hospital for treatment and some medications that can help support their immune system.
Hope this helped :)
Have a great day
1. C) Change in fossil fuel use
2. C) Reduce the amount of fossil fuels used