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Alborosie
3 years ago
6

These cells do not function as antigen presenting cells (APCs)?

Biology
1 answer:
algol133 years ago
7 0

Answer:

Birds feathers are modified scales. true or false

Explanation:

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I am leaning towards D because everything changes during Cell differentiation the functions changes and goes through many different cycles.

Explanation:

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How were the fossil symbols and mountain belts helpful in deciding where to move the continents
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The graph below compares the rates of reaction of a burning candle and an exploding firework
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Explanation:

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8 0
3 years ago
1. Which of the following correctly compares the changes that take place in an ecosystem during primary succession and secondary
mr Goodwill [35]
The correct answers are as follows:
1. A.
There are basically two types of succession, they are primary and secondary succession. Primary succession refers to the type of succession that occurs in new and bare areas where the soil present is unable  to sustain the growth of plants. An example of primary succession area is an area with sand dunes that is freshly formed. Primary succession usually occur over a long period of time. Secondary succession is a type of succession that occur on a land which was disturbed by  hazardous events such as fire outbreak, flood, etc. Secondary succession occurs much faster than the primary succession.

2. D
There are two types of factors that affect any particular ecosystem, these are abiotic and biotic factors. The abiotic factors refers to non living factors such as temperature, relative humidity, rainfall, etc. while the biotic factors refer to the living factors. Looking at the options given above, one will see that only option D has living factor, which is predators. All other options have abiotic factors.
6 0
3 years ago
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