Answer:
Option 2, or B: a way of classifying books
Explanation:
Dewey Decimal system definition = The Dewey Decimal Classification (DDC), colloquially the Dewey Decimal System, is a proprietary library classification system first published in the United States by Melvil Dewey in 1876.
What is the Dewey Decimal system? Well, the definition says it is a proprietary library classification system.
So..
Our answer is 2 or B: a way of classifying books.
Hope this helps!
- Melanie
The answer is true because the ozone layer traps radiation which is heat and distributes it evenly across earth
Answer is: active transport.
In active transport<span> because energy is required to move the sodium and potassium ions against the concentration gradient. There is two type of active transport:
1) </span>Primary active transport directly
uses metabolic energy (adenosine triphosphate- ATP) to transport molecules
across a membrane.
2) In secondary active transport (coupled
transport) there is no direct coupling of ATP, energy derived from
the pumping of protons across a cell membrane.
A small population of bears who are the last members of their species
Progesterone and estrogens are thought responsible for the release (and prevention of release) of an egg during ovulation