Answer:
C.
Explanation:
Some diseases are caused by mutated genes.
Answer: through research.
Explanation:
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>
The reason as to why that is happening because as they grow older, their system gets weak and how they perceive things gets slow as their senses decline because of their age. This will enable to affect their sensory input, making older people receive less input compared to those who are younger to them.
If someone has been exercising for at least three months consistently , this person is considered a regular exercise.
Explanation:
Regular exercise is needed to keep our body fit , so that proper circulation takes place . It will also improve the overall fitness. Some of the examples of regular fitness are walking, swimming, jogging. This also increase the regular strength of the body. The cardiovascular system also works efficiently. Regular exercise also helps in gaining energy that also helps in doing daily chores. It also provide healthier skin also improves the mood.
