The question being tested is whether or not the human body will produce more red blood cells at higher altitudes.
The hypothesis an athlete would create from this question is that the body will produce more red blood cells at a higher altitude to ensure the pumping of oxygen throughout the body.
Answer:Talking to your child helps expand vocabulary, develop background knowledge, and inspire a curiosity about the world – all of which help with learning to read.
Explanation:
By using a woodstove, the kilograms of wood required to
heat a room to 20°C is 3 kg
<h3>Efficiency of a machine</h3>
- Efficiency is the percent of work put into a machine (input work) to that of the work done by the machine (output work).
- Efficiency of a machine is always less than 100% because the output work is always less than the input work because some of the input work is used to overcome friction.
Efficiency = work output/work input * 100%
Efficiency of fireplaces = 15%
Amount of food required to heat a room to 20°C = 15 kg
Assuming efficiency of 100%, amount of wood required will be X kg:
X = 15% * 15 kg
X = 2.25 Kg
By switching to woodstoves which are 75% efficient, amount of wood required will be Y kg:
Y = 2.25 kg / 75%
Y = 3 kg
Therefore, by using a woodstove, the kilograms of wood required to
heat a room to 20°C is 3 kg
Learn more about efficiency of machines at: brainly.com/question/3617034
Answer:
Water damage
Explanation:
if the water rises to high it can end up damaging home, because water and leak past an old sealant, and water also rots wood, but not only will it cause damage but it could infact end up being fatal if it gets too far out of hand, a way to prevent this from being fatal is to rise water leaves with extreme caution and keep a meter my the leaves so you can tell it they get dangerously high so that way you can prevent an accident before hand. it water levels are kept well and in a good range this will prevent any injuries are fatal accidents happening as well as home being ruined. But as another precaution make sure you freshen up the sealant on your walls or wherever it may be and it your house it made from wood be sure your at a higher area of ground to the water flows away from your house
