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liq [111]
3 years ago
14

Which of the following is a good reason for why tobacco smoke is considered a carcinogen?

Biology
2 answers:
Fudgin [204]3 years ago
7 0

Ans.

Carcinogens can be defined as a physical and chemical agent that leads to development of cancer (carcinogenesis), such as radiation, toxic chemicals, and tumor-causing viruses due to mutations in genetic material of cells.

Tobacco is considered as a carcinogen as it can cause lung cancer, mouth cancer, and various other types of cancer. Tobacco contains around seventy chemicals, which promote or initiate cancer and make it a potent carcinogen.

Thus, the correct answer is option). 'it causes mutations leading to cancer.'

olga2289 [7]3 years ago
6 0
It caused mutations leading to cancer because carcinogen means "a substance capable of causing cancer' according to the New Oxford American Dictionary
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How do changes in the environment influence ecosystem stability?
Lelu [443]

Answer:

Climate change can alter where species live, how they interact, and the timing of biological events, which could fundamentally transform current ecosystems and food webs. Climate change can overwhelm the capacity of ecosystems to mitigate extreme events and disturbance, such as wildfires, floods, and drought

Explanation:

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What are the two main differences between capillaries in the periphery and capillaries surrounding the brain
Lorico [155]

Answer:

The options are not given but they are gotten from another websites.

A. Capillaries surrounding the brain have no pores and are surrounded by membranes of astrocyte cells.

B. Capillaries surrounding the brain have pores and are surrounded by membranes of astrocyte cells.

C. Capillaries surrounding the brain have no pores and are not surrounded by membranes of astrocyte cells.

D. Capillaries surrounding the brain have pores and are not surrounded by membranes of astrocyte cells.

The correct answer is option A.

Capillaries surrounding the brain have no pores and are surrounded by membranes of astrocyte cells.

Explanation:

Capillaries surrounding the brain have no pores and are surrounded by membranes of astrocyte cells because

Capillaries are tiny blood vessels in the circulatory system that connect aterioles to venules. They are the most abundant or they are much blood vessels. They can penetrate the tissues of the body which allow passage of food nutrients, oxygen in the body thereby allowing exchange of nutrients and oxygen between the body tissues and the blood.

Capillaries surrounding the brain have no pores and are surrounded by membranes of astrocyte cells while capillaries in the periphery Capillaries surrounding the brain have pores and are not surrounded by membranes of astrocyte cells.

8 0
3 years ago
When two or more elements bond together in specific proportions, ___ is formed?
aliina [53]
<span>When two or more elements bond together in specific proportions, "Compound" is formed.

Hope this helps!</span>
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