1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Dmitry [639]
3 years ago
9

Which of the following accurately describes an effect of smoking? A. Smoking damages cilia in the trachea and more particles ent

er the lungs. B. Smoking lowers blood pressure. C. Smoking enables hemoglobin to carry more oxygen. D. Smoking decreases heart rate.
Biology
2 answers:
soldier1979 [14.2K]3 years ago
7 0
One of the side effects of smoking is the damage of cilia in the trachea which allows particles to entre the lungs. Smoking destroys the cilia which are key in keeping particles from getting down into your lungs so every time a person smokes more and more cilia are destroyed.
zlopas [31]3 years ago
6 0

Correct answer: A). Smoking damages cilia in the trachea and more particles enter the lungs

Tar is a particulate matter that is generated by the burning of tobacco, in a form of cigarette smoke. It contains a variety of inorganic and organic chemicals like carbon dioxide, nitrogen, oxygen, carbon monoxide, and volatile compounds.

Smoking is known to destroy the cilia, fine hair that is known to be found in the upper airways that help to protect against the infection. If cilia are damaged then tar can more easily penetrate into the lungs can cause more damage and may cause cancer.

Hence, the correct answer would be option A.


You might be interested in
Consider this situation: you want to reabsorb sodium ions but you do not want to increase the volume of the blood by reabsorbing
choli [55]

Answer:

Increase aldosterone and decrease ADH

Explanation:

Aldosterone causes reabsorption of sodium ions while Antidiuretic hormone (ADH) causes reabsorption of water. Aldosterone also causes water reabsorption due to increased osmotic pressure by reabsorbing sodium ions. But for water reabsorption, Aldosterone has to work along with ADH to increase permeability for water. If we increase Aldosterone and decrease ADH, the sodium ions will be reabsorbed while water cannot be reabsorbed due to decreased permeability of DCT and collecting tubules for water.

7 0
3 years ago
Populations of organisms living together in the same place at the same time are called a/an
kiruha [24]

Answer:

the answer is D ecosystem

5 0
3 years ago
The beginning of autumn in North America is in September, but the beginning of autumn in South America is in March. The diagram
ahrayia [7]

Answer: ,Option B.

The Earth's axis has a 23.5 degree tilt.

Explanation:

The Earth axis of rotation is tilted to 23.5 degrees which is relatively to the orbital plane, this lead to differences in seasons of the places on Earth at a particular time. The angles varies overtime but moon gravitational pull prevent it from shifting more than a degree. There is different in seasons in the northern and southern hemisphere because at a time one part of it exposed to the Ray's of sunlight than the other which lead how the Earth's revolve round it's axis.

3 0
3 years ago
Differences between arteries, veins and capillaries​
matrenka [14]

Answer:

There are three main types of blood vessels:

1)Artery ---

i) It is a blood vessel having a thick wall.

ii) It carries blood from the heart to different parts of the body.

iii) On regulatory demand of the body it can dilate or constrict.

iv) It doesn't contain any valve.

v) All arteries carry oxygenated blood except the pulmonary artery.

2)Vein ---

i) It is a blood vessel having a thin wall.

ii) It brings blood from different parts to the heart.

iii) It can't dilate or constrict under normal conditions.

iv) It contains valves that allow the blood to flow in one direction towards the heart.

v) All veins carry deoxygenated blood except the pulmonary vein.

3)Capillary ---

i) It is a very narrow blood vessel that has very thin walls.

ii) It forms a network throughout the body in all living cells connecting arteries to veins.

iii) It can dilate or constrict according to the requirement of tissue.

iv) It doesn't have any valve.

v) It contains mixed blood as it connects arteries and veins

5 0
2 years ago
Compared to the time he spent in other parts of South America, Darwin spent little time collecting specimens in the Galapagos.
Feliz [49]

The correct answer is True

7 0
3 years ago
Read 2 more answers
Other questions:
  • Select the best answer for the question
    12·2 answers
  • All glands in the body, such as salivary glands and the pancreas, are derived from which type of tissue
    11·1 answer
  • Which tends to increase the size of a population?
    8·2 answers
  • A protein is 300 amino acids long. Which of the following could be the number of nucleotides in the section of DNA that codes fo
    11·2 answers
  • Please do anyone know the answer
    12·1 answer
  • If you move a substance from one container to another and its volume changes oh, the substance is a? a) solid b) liquid c) gas d
    7·2 answers
  • How do endangered animals affect the earth?
    8·1 answer
  • What is the difference of growth in living organisms and no living things
    15·1 answer
  • What carries information for the rods and cones back out to the ganglion cells and then to the brain?
    6·1 answer
  • The primary electron acceptor in photosystem II is __________. Group of answer choices P700 P700 P680 P680
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!