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Paha777 [63]
3 years ago
7

What is the best definition of direct cause of disease?

Biology
1 answer:
vekshin13 years ago
8 0

Answer:

D. a cause that directly leads to a normal condition without interference

Explanation:

Direct contact infections spread when disease-causing microorganisms pass from the infected person to the healthy person via direct physical contact with blood or body fluids.

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How do cigarettes and radiation cause cancer? View Available Hint(s) How do cigarettes and radiation cause cancer? by destroying
blagie [28]

Answer: B.  by toxic chemicals (in smoke) or radiation that can damage the DNA in cells.

Explanation:

The carcinogens presents in cigerates covalently bind to DNA and form DNA adducts which results into miscoding (e.g., insertion of the wrong base) during replication of DNA and this genetic mutation causes uncontrolled cellular growth which causes cancer.

Ionising radiation including X-rays, radioactive particles, and gamma rays,can cause cancer by damaging DNA. high-energy radiation damages DNA and cause genetic mutation same as cigerates and causes cancer.

Both toxic chemicals (in smoke) or radiation damages DNA inthe cells which leads to cancer.

Hence, the correct option is B.

3 0
3 years ago
This is a solid substance that is composed of minerals.
Roman55 [17]

Answer: The answer is rock.

Explanation: A rock is a a solid substance in which it is composed of large quantities of one mineral, or contains 2 or more minerals.

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Reticulum is the only one I know of that contain lysosmes.
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rjkz [21]

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the answer is B. 2 long, 2 short.

Explanation:

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How did a change in the environment affect life for people in the American
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