I think it's B. Independent Variable. i hope i've helped
Guys The Answer To The Question.
(C). To move oxygen from the air into the body and carbon dioxide from the body into the air.
Answer:
Explanation:
It is a physical change .
If we start from 10 atm of pressure and - 40 celsius of temperature to 20 atm of pressure and 70 celsius of temperature , it is a change in which pressure increases and temperature also increases that means heat is added up to the gas . If we cool the gas we can retrieve its earlier pressure and temperature .
So it is a physical change . In physical change , we can retrieve the old position by simple means.
Answer:
The process by which a body of water becomes enriched in dissolved nutrients (such as phosphates) that stimulate the growth of aquatic plant life usually resulting in the depletion of dissolved oxygen.
Answer:
m = 8.1 kg
Explanation:
Density of metal ball, d = 8.96 g/cm³
Diameter of ball, d = 12 cm
Radius of ball, r = 6 cm
Density of an object=mass/volume
The metal ball is in the shape of sphere whose volume is given by :
![V=\dfrac{4}{3}\pi r^3\\\\V=\dfrac{4}{3}\pi (6)^3\\\\V=904.77\ cm^3](https://tex.z-dn.net/?f=V%3D%5Cdfrac%7B4%7D%7B3%7D%5Cpi%20r%5E3%5C%5C%5C%5CV%3D%5Cdfrac%7B4%7D%7B3%7D%5Cpi%20%286%29%5E3%5C%5C%5C%5CV%3D904.77%5C%20cm%5E3)
Now using formula,
![m=d\times V\\\\m=8.96\ g/cm^3\times 904.77\ cm^3\\\\m=8106.73\ g](https://tex.z-dn.net/?f=m%3Dd%5Ctimes%20V%5C%5C%5C%5Cm%3D8.96%5C%20g%2Fcm%5E3%5Ctimes%20904.77%5C%20cm%5E3%5C%5C%5C%5Cm%3D8106.73%5C%20g)
or
m = 8.1 kg
So, the mass of the metal ball is 8.1 kg.