Answer:
I think the answer is b. DNA
Answer:
The correct answer is - scanning electron microscope.
Explanation:
SEM or a scanning electron microscope is that produces an image by an electron beam over the sample surface to scan. The electrons of the beam interact with the sample producing various signals that allow providing information about the composition and topography of the individual sample. The magnification of the SEM is in between 20X to 30000X
Thus, the correct answer is - scanning electron microscope.
The most significant uses of coal are in electricity generation, steel production, cement manufacturing and as a liquid fuel. Steam coal - also known as thermal coal - is mainly used in power generation.
Answer:
long cold winters, with annual temperatures mostly below freezing.
