Answer:Estuaries
Explanation:
Estuaries are areas where freshwater streams or rivers merge with the ocean. This mixing of waters with such different salt concentrations creates a very interesting and unique ecosystem
Fatty acids are building blocks of lipids. The correct option is A.
Fats and oil are known as lipids.
Lipids are part of the classes of food which are made up of high proportion of carbon and hydrogen with very little oxygen.
Fats are solids and oils are liquids at room temperature. They serve the following functions to the body:
- They provide the body with energy
- They are solvents for fat-soluble vitamins and hormones.
Before lipids can be absorbed into the body, they must be broken down into fatty acids and glycerol.
Therefore, fatty acids are building blocks of lipids.
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Option D
polymerase chain reaction (PCR) do Makes more copies of a sample of DNA
<u>Explanation:</u>
A procedure to create several portraits of a distinct DNA section is termed as Polymerase chain reaction. In other words, it is a lab routine handled to compose various representations of a portion of DNA. PCR is extremely explicit and can be utilized to increase, or model, a particular DNA destination from a hybrid of DNA particles.
In PCR, the effect is regularly cycled within a range of temperature variations, which deduct countless models of the destination range to be exhibited. PCR intends to obtain sufficient of the objective DNA region that it can be examined or applied in some other way.
Answer:
C. under 1 and 2. because Earth's entire outer layer is made of hard, solid rock
Explanation:
Just because 2 is under water does not mean it will not work it will just be very difficult. But at the bottom of the sea there is always solid rock.
