In exercise 2-4, after you have obtained a pure culture plate, you use cells from a single isolated colony to
a. make a smear for a simple stain.
b. make a three-phase streak plate.
c. make a smear for a differential stain.
d. inoculate a tube of tsb.

c. make a smear for a differential stain.

Explanation:

After isolating a pure culture it is necessary to inoculate the microorganism in a differential medium. Differential culture media enable the differentiation of microorganisms or groups of microorganisms. These media contain specific dyes or chemicals for growth of desired microorganisms.

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explanation:

plate tectonics and volcanic euptions

over time, plate tectonic processes cause continents to move to different positions on the globe.

for example, britain was near to the equator 300 million years ago, and therefore was hotter than it is today. for further details look at our climate through time poster or online map.

the movement of the plates also causes volcanoes and mountains to form and these too can contribute to a change in climate.

mountain ranges formed by plate tectonics. large mountain chains can influence the circulation of air around the globe, and consequently influence the climate.   warm air might be deflected somewhere cooler by the mountains.

answer: b

coz red blood cells marrow and circulates the body for 120 days.