A virus achieves host specificity through on the surface of the capsid or envelope, which bind to the host cell. lipids sugars nucleic acids proteins

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

protein makes up the building blocks of organs, muscles, skin, hormones and pretty much everything that matters in your body.

some choices are:

peanut butter

seeds

eggs

yogurt

meats

fish

so pretty much meat, dairy, nuts, and grains.

to figure the total magnification of an image that you are viewing through the microscope is really quite simple. to get the total magnification take the power of the objective (4x, 10x, 40x) and multiply by the power of the eyepiece, (usually 10x)