Answer:
muscle contraction increases interstitial fluid pressure and compresses the blood vessels within the active muscle. As a consequence, blood flow is highest when muscles relax between successive muscle contractions.
Explanation:
Robert Hooke was the first person to see a dead cell.
Explanation:
Gas poisoning in our environment is a major problem due to its high incidence. In the specific case of carbon monoxide poisoning, it is the leading cause of death due to involuntary poisoning in our environment, often coexisting with cyanide poisoning. Both poisonings can be serious, based on their diagnosis on the mere suspicion of the doctor. In addition, its importance lies in the fact that both poisonings have a specific treatment. Normo or hyperbaric oxygen therapy is the treatment of choice for carbon monoxide poisoning. In the case of cyanide poisoning, hydroxocobalamin is today the treatment of choice, as it has proven to be an effective antidote.
<u>Answer:</u>
The main function of the ozone layer is to block most of the sun's damaging rays from reaching Earth.
Option: (b)
<u>Explanation:</u>
- The stratosphere containing high level of ozone molecules about 30 km to 50 km altitude helps to absorb the sun's ultra violate rays.
- In its absence, it would be very difficult for anything to survive. Plants cannot live and grow as the UV light causes weakening of plants.
- It causes skin cancers. The increase in UV flux will lead to increase in sunburn, blindness, cataract, causing potentially death of animals and plants.
The gas dissolves faster if the liquids temperature is increased.
