The remains of the living organisms used in understanding the history of life on Earth is fossils.
Fossils are the preserved remains of plants and animals whose bodies are buried in sediments such as sand and mud under ancient seas, lakes and rivers.
Fossils are the geologically altered remains of once-living organisms and/or their behavior. There are mainly two types of her: Body fossils represent all or part of an organism's body, while vestigial fossils show an organism's behavior.
Fossils form in a variety of ways, but most often form when living organisms (such as plants or animals) die and are quickly buried by sediment (such as mud, sand, or volcanic ash).
Fossils are found mainly in river valleys, cliffs and hills where sedimentary rocks of appropriate age are exposed, and in areas of human exposure such as quarries and road cuttings.
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C. Rural, low density, advanced technology
Explanation:
A community of miners that lives out in the country side of West Virginia and use specialized geological equipment to analyze the composition of a rocks can best be described as rural, low density and advanced technology.
- The use of specialized equipment by the miners makes them an advanced technology set of people.
- The community is of low density since it is a production area situated on the country side.
- The bulk of the population here would be mostly miners and their family
- In fact some of them would prefer to come from West Virginia
- This community is rural and not an urban center
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The answer is 50%.
This is an example of Mendelian monohybrid cross:
Parents: rr x Rr
Offspring: Rr Rr rr rr
So, in this cross, 2 out of 4 offspring will be heterozygous (Rr), and other 2 out of 4 (which is 50%) offspring will be recessive homozygous (rr) and will have freckles.
When Robert Hooke looked at cork under a microscope he saw littl figures that looked like jail cells or cabinet cells or like square bee hive combs. so he named them cells
