Finding evidence such as Giant Sloths, breeds of horses, and hippos in environments which no longer had those existing animals was proof that survival of the fittest was important in climate changing locations.
Answer:
b. founder effect
Explanation:
When there is a situation when sufficient number of members of one species are reproductively isolated, and if there is an evolutionary pressure for them to start developing new advantageous traits, then a new species will gradually emerge. In this kind of scenario the genetic diversity will be minimized, as the number of individuals is much smaller, and that will result in only changes that will go in only one direction and they will also occur quicker than if there was a greater genetic diversity. This is called the founder effect, and it is easy to see why this term has been chosen, as the limited number of members of a species that have been reproductively isolated are giving the foundation for the development of a new, separate species.
Answer:
Maya astronomer-priests looked to the heavens for guidance. They used observatories, shadow-casting devices, and observations of the horizon to trace the complex motions of the sun, the stars and planets in order to observe, calculate and record this information in their chronicles, or "codices".
The answer is definitely true
Working Formula:
Cell Size = Image size/Magnification
Substituting the given figures to the formula, we get
Cell Size = 25/100000 = 0.00025 mm
To convert millimeters to micrometers, use conversion of 1 mm = 1000 micrometers. Thus, we multiply the answer by 1000.
Therefore,
Cell Size = 0.25 micrometers