Answer:
Non-conformity
Explanation:
The Precambrian rocks are mainly characterized by the presence of igneous and metamorphic types of rocks, typically schist, gneiss, and granite. These are much older than the Cambrian sedimentary rocks.
The unconformities are usually defined as the time of non-deposition, which creates gaps in the geological rock sequences.
The type of unconformity that occurs in the above-given condition is the non-conformity. This type of unconformity is found when the older igneous or metamorphic rocks are underlain by the younger sedimentary rocks.
Antarctica has no permanent residents because the weather is too cold to be sustainable, there's no constant source of food, and there are many predatory organisms residing there.
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B.)<u><em>
Secondary Succession</em></u></h3>
Explanation:
"Many different kinds of disturbances, such as fire, flooding, windstorms, and human activities (e.g., logging of forests) can initiate secondary succession."
Answer:
C) Photosynthetic bacteria, invertebrates, vertebrates, reptiles, amphibians, mammal.
Explanation:
- From looking at the above records of evolutionary life on earth the traces of living fossils and organisms that are evolved to the biogenic carbon signatures and the earliest known stromatolite fossils on earth the evidence of 3.7 billion year rocks taken from western Greenland.
- All show the occurrence of first life forms as photosynthetic bacteria and evolution of soil and oxygen in it took place then the invertebrates plat and animals appeared on land and oceans like the nematodes and arthropods, after which started to evolve like the vertebrates like the tetrapod the first fish with four limbs in 360 million years.
- After which reptiles and dinosaurs are the largest land reptiles evolved and then came the amphibian likes and then lead to the evolution of man and other mammals.
Answer:
50-64
Explanation:
China is the nation with the largest population in the world, and that has been the case throughout all of the written history, and probably even before that. The country had very large birthrates, which was leading to rapid growth to the population. Because of that, there was even a law that restricted the families as to how many children they can have. Because of that law, the population of China started to gradually age, so the percentage of the younger age groups has been declining, while the percentage of the older age groups has been on the rise. This has led to the age group of 50-64 to account for 120 million people in China, a percentage that has grown almost twice compared to several decades prior to that.
