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Orlov [11]
2 years ago
13

A common symptom of pharyngitis is swelling of the anterior cervical lymph nodes. why might lymph nodes swell in the presence of

an infection? what else may cause swollen lymph nodes
Biology
1 answer:
vlabodo [156]2 years ago
6 0

Lymph is the fluid carrying the white blood cells. It protects the body against many infections. Lymph nodes are the small areas throughout the body and abundantly present in the neck, arm pits and groin areas. They contain the lymphocytes that fight infections. These nodes filter out harmful organisms and abnormal cells before the lymph reaches the blood. A swollen lymph node is an indication of an infection. It can be a minor infection like the ear infection, strep infection or serious medical problems like the lymphomas, other cancers and AIDS. During pharyngitis which is the inflammation of the pharynx, the lymph nodes swell with the T lymphocytes due to the immune response.

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An organism adapts to both biotic and abiotic factors in its environment. Decide if each adaptation is in response to a biotic o
Sauron [17]

Answer:

The correct answer is

1. A rabbit living in  a desert has long ears  to disperse heat- abiotic factor.

2. A moth immediately  dives to the ground  when it hears a bat- biotic factor.

3. A lizard stays warm  by sunning itself  on a rock- abiotic factor.

4. A cactus has spines  instead of leaves  to help conserve water- abiotic factors.

5. A petunia is  bright red to  attract hummingbirds- biotic factor.

6. A stick-bug blends in  with trees to hide  from predators- biotic factor.

Explanation:-

The environment includes both abiotic and biotic factors which can affect the ecosystem. Living elements like plants and animals which affect ecosystem are known as biotic factors while the non-living elements which include air, water, temperature are called abiotic factors.

In the given question the options affected by the biotic factors due to bat, due to hummingbirds and due to predators.

Options affected by the abiotic factors due to heat and due to water.

4 0
3 years ago
Which cell structure are seen in all cell types
Lisa [10]
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3 0
2 years ago
Traits that enable an organism to reproduce, without necessarily helping them to survive, are often selected for. Darwin called
4vir4ik [10]
The example that does not exhibit sexual selection is:
D. male elephant seals fighting over territory and potential female mates
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4 0
3 years ago
Read 2 more answers
PLEASE HELP AS SOON AS POSSIBLE
Lelechka [254]

Answer:

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All the animals are vertebrates

Explanation:

The lines of all reached the end of 23.

Carnegie stages are used only for vertebrate embryos,

4 0
3 years ago
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alexdok [17]

Answer; Disaccharide is form when two monosaccharides undergo a dehydration reaction ( or a condensation reaction).

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3 years ago
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