The Cretaceous mass elimination denotes the limit between the Mesozoic and Cenozoic times. It was a mass termination of some seventy-five percent of the plant and creature species on Earth that happened over a topographically brief timeframe for more than 66 million years.
Answer:
Pyramids of number show the number of <u>organisms</u> in each <u>trophic</u> level but pyramid of <u>biomass</u> show their total mass. This gets less at each trophic level because every living thing loses most of the <u>energy</u> they take in. Some is lost as heat during <u>respiration</u> and some is lost in the waste <u>products</u> living things excrete. Their consumers can only get the energy left in their <u>tissues</u>.
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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