Well, Assuming that this is the same multiple choice question that I have answered, I would say B. Chromosomal Disease.
Answer:
Varicose veins can best be described as veins cannot prevent the backflow of blood.
Explanation:
Varicose veins are a manifestation of venous insufficiency or peripheral vascular insufficiency.
Veins are blood vessels that, unlike arteries, are not able to contract, so they depend on gravity, muscle contractions and a system of valves to be able to carry blood to the heart.
<u>When the venous valves do not work, the blood is not transported properly, backflow occurs and is retained, producing dilation of the vein walls, which is characteristic of varicose veins</u>. In this case, veins cannot prevent the backflow of blood.
The other options are not correct because:
- <em>Varicose veins do not lose their ability to transport blood.
</em>
- <em>Veins cannot be used to transport blood from the heart.
</em>
- <em>Failure to adequately transport waste to the heart does not apply in this case.</em>
<span>Answer 1: The correct answer is B. 450 feet.
A high beam refers to a beam from the headlight from an automobile that is useful in providing visibility and brightness when driving on dark or poorly lit road.A high beam can illuminate the road in front of you for 450 feet, providing good long-distance visibility.
Answer 2: The correct answer is B. Gateway drugs.
<span>
A gateway drug refers to a drug that makes it easier to try or consume drugs that are "harder" (more potent or dangerous). Examples of gateway drugs are milder drugs such as marijuana and alcohol, which when consumed can lead the use of more addictive and dangerous drugs such as cocaine or methamphetamine. </span></span>
Air pollution is usually with all the smoke from using fossil fuels, I would try not using them as much. Water pollution is usually from oil spills and garbage littered in water sources. Land pollution is a lot from landfills, we are using so much garbage it takes lots of landfills to hold them, I would start by recycling my recyclable products and using recycled products. {{{BTW this is not good 2 paragraphs, use more evidence and details and add more this is just some good ideas}}}
