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NikAS [45]
3 years ago
9

Which piece of evidence do scientists refer to back their idea that life-forms have changed (or evolved) over time?

Biology
1 answer:
Akimi4 [234]3 years ago
7 0

In older rock layers we find fossils of living things that no longer exist on earth.

Explanation:

Scientists often refer back to fossils found within sedimentary rocks to back their idea that life forms have changed over time.

Fossils are the preserved remains of organisms that once lived on earth. Special conditions must be in play before an organism can become a fossil like presence of hard parts.

  • Fossils are indicators of ancient life forms that has once lived.
  • They provide us with important clues to the nature of organisms that existed in time past.
  • Using phylogenetic relationship with their present day ancestors, it is possible to trace the evolutionary history of a specie.

Learn more:

Evolution brainly.com/question/6912833

Fossil brainly.com/question/12790206

#learnwithBrainly

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Eyepiece magnification(EM) X Objective magnification (OM)= Overall Magnification:
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Answer:

I. Overall magnification (TM) = x40

II. Overall magnification (TM) = x100

III. Overall magnification (TM) = x400

IV. Overall magnification (TM) = x1000

Explanation:

A microscope can be defined as an optical device that is typically used to make an enlarged (magnified) image of a minute (small) object and as such reveals all the little information about the object that cannot be seen by the natural human eye.

Mathematically, the overall (total) magnification of a microscope is given by the formula;

Overall magnification (TM) = Eyepiece magnification(EM) X Objective magnification (OM).

I. When EM = x10 and OM = x4

TM = EM * OM

TM = x10 * x4

<em>TM = x40</em>

II. When EM = x10 and OM = x10

TM = EM * OM

TM = x10 * x10

<em>TM = x100</em>

III. When EM = x10 and OM = x40

TM = EM * OM

TM = x10 * x40

<em>TM = x400</em>

IV. When EM = x10 and OM = x100

TM = EM * OM

TM = x10 * x100

<em>TM = x1000</em>

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