Answer:
A-Hydroelectric, hydro means water
Explanation:
The author supports the statement by explaining the different theories about yawning, this includes theories and some that are still studied.
The author states that scientists have not yet reached any consensus regarding theories about why humans yawn and argue this claim by explaining the following theories about yawning:
- In Antiquity: Hippocrates' Yawning Theory focused on the respiratory system by hypothesizing that yawning precedes fever and is a way of removing polluted air from the lungs.
- In the seventeenth and eighteenth centuries: Most theories focused on the circulatory system. These theories posited that yawning causes an increase in blood pressure, heart rate, and oxygen in the blood.
- Today: Dr. Robert Provine, in 2005 stated that yawning is associated with changing a state of behavior.
- Gallup in 2008 proposed that yawning is related to a way of cooling the brain's temperature.
- In 2011, Dr. Andrew Gallup and Omar Tonsi Eldakar stated that yawning is related to the outside temperature, that is, when the temperature is warm, the body yawns less frequently.
According to the above, it can be inferred that scientists have not reached a consensus on yawning because all have raised different theories to explain its function.
Learn more in: brainly.com/question/8945611
Emotional effects of steroid use seem to depend on the type of steroid used. The correct option among all the options that are given in the question is the last option or option "d". There are various type of drugs that affect the user in variety of emotional ways. Some drugs make people violent, while others take them to the dreamland.
Fatty acids are the building blocks of lipids
WHAT ARE LIPIDS?
- Lipids are one of the four major biological molecules in nature (the other three are proteins, carbohydrates and nucleic acids).
- Lipids are organic compounds that are generally characterized by their insolubility in water.
MONOMERS OF LIPIDS:
- Lipids, like every other biological molecule, are polymeric compounds i.e. they are made up of smaller monomeric units. The monomers that make up lipids are called FATTY ACIDS.
Therefore, fatty acids are the building blocks of lipids.
Learn more: brainly.com/question/18846036
A. 1 year
it is because it completes one full revolution in 365 days and 6 hours and it is equals to 1 year
