Answer:
The cell membrane is semipermeable because it prevents harmful toxins from entering and damaging the cell. At the same time, the cell membrane allows nutrients and other helpful substances through. In this way, the cell membrane is like a security guard of the cell.
Explanation:
HOPE U UNDERSTOOD
Answer:
copper or silver or aluminium
Explanation:
mainly copper because it is cheap other are expensive
It required south vietnamese troops replacing American troops
<span>Absolute advantage is the ability to produce a good or a service at a lower production cost than competitors. Comparative advantage is the ability to produce a good or service at a lower opportunity cost than competitors.
Absolute advantage refers to the ability to produce a good more efficiently than a competitor, which means at a lower cost. Comparative advantage means that, relative to the cost of producing other products, you can produce the good at a lower cost. This is also known as the opportunity cost. </span><span />
Answer:
Frequency invoice
Explanation:
When several times the voice repeating occurs in a limited period. It is in the form of waves. It is also called a voice band means that the frequencies occur within the part of audio that is used for the transition of speech of a person or animal. It is a fundamental frequency in human voice especially in males ranges from 80 to 180 Hz and in the female, it ranges from 165 to 255. The fundamental frequency falls below the voice frequency. In this process the sound works as an acoustic sound source:
