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anyanavicka [17]
3 years ago
8

Of the sites listed below, which one is the homo erectus site that provides the longest record of habitation

Biology
1 answer:
Temka [501]3 years ago
8 0

Answer:

Zhoukoudian

Explanation:

Zhoukoudian can be seen as a cave system which is found in suburban Fangshan District, Beijing in which It has yielded many archaeological discoveries, which include one of the first specimens of Homo erectus , dubbed Peking Man,as well as a fine assemblage of bones of the gigantic hyena Pachycrocuta brevirostris.

The cave was identified as Homo erectus and it said to have more than 10,000 pieces of stoneware, several cinder layers indicating fire use in early man, as well as animal fossils which are from 200 separate species.

Therefore Zhoukoudian is the homo erectus site that provides the longest record of habitation

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Some viral diseases are dangerous only when a person is infected for the first time; subsequent infections produce only mild sym
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3. Memory cells that trigger a primary immune response

4. T cells that trigger a primary immune response

Answer:

1. Memory cells that trigger a secondary immune response

Explanation:

During the first infection when the body is invaded by a particular antigen, the immune system tries to identify the type of antigen. B lymphocytes make antibodies when the antigen has been identified in the event of a primary infection. The response of the immune system during the primary infection of that pathogen is usually slow. As soon as the primary infection is arrested by the antibodies produced in response, memory cells such as the memory B cells is formed, which enables the immune system to identify the same pathogen, and thereby triggers a faster secondary immune response in subsequent infections by the same pathogen.

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4 years ago
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The law of conservation of energy states that energy

Explanation:

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8 0
3 years ago
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Which of the following correctly matches a component of the cytoskeleton to one of its functions? 1) intermediate filaments cont
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