The answer is letter A. When you notice the soft sound of rain on the roof, it has crossed a perpetual line called your absolute threshold for detecting an auditory signal. Absolute threshold is the smallest energy that stimulates our human senses such as hearing, seeing, smelling, etc.
Answer:
Natural resources are things that exist without any actions from human-kind. This is something like wood or stone.
However artificial resources are things that are man-made. These are things such as paper.
Answer:
A planet is round because of gravity. A planets gravity pulls equally from all sides
Explanation:
Gravity pulls from the center to the edges. This makes the overall shape of a planet a sphere
<span>A city that with its surrounding territory forms an independent state.</span>
It provides a written record of the transaction.
Checks are easier to carry.
Answer: Option A & B
<u>Explanation:</u>
People these days prefer to use cheques instead of cash for the payment that they have to receive or have to make to other people. The reason for this is that the cheques given to the people were written record of the transaction that has been made with the cheques and it is more safe than cash because it is easier to carry also. It can not be stolen by the thieves as it is in the case of cash.