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The answer is B. The theory of isostatic equilibrium is used to explain the vertical height of a particular point on the earth such as the Himalayas. This theory is very similar to the principle of buoyancy. The mantle, in this case, is the liquid being displaced by the crust above. To accommodate great pressures such as those exerted by the Himalayas, the mantle distributes the force by height adjustments.
Answer:
The albedo temperature for Mars and Venus are 210K and 184 K respectively.Mars albedo temperature is closer to its black body temperature such that the Venus has more albedo.Thus there is a chance that Mars would have had life in their history.
Explanation:
The albedo temperature is given as
![Te =\left [\dfrac{L(1-a)}{ (16\pi \sigma D^2}\right]^{1/4}](https://tex.z-dn.net/?f=Te%20%3D%5Cleft%20%5B%5Cdfrac%7BL%281-a%29%7D%7B%20%2816%5Cpi%20%5Csigma%20D%5E2%7D%5Cright%5D%5E%7B1%2F4%7D)
Here
L = Solar luminosity = 3.846*1026 W m-2 K-4
D = distance from Sun
σ = the Stefan-Boltzman constant = 5.6704 * 10-8 W
a is the albedo constant whose value for Mars is 0.250 while for Venus it is 0.900
So the albedo temperature is given as
Venus: 184 K
Mars: 210 K
The black body temperature is given as
![Te =\left [\dfrac{L}{ (16\pi \sigma D^2}\right]^{1/4}](https://tex.z-dn.net/?f=Te%20%3D%5Cleft%20%5B%5Cdfrac%7BL%7D%7B%20%2816%5Cpi%20%5Csigma%20D%5E2%7D%5Cright%5D%5E%7B1%2F4%7D)
By substitution of the values, the black body temperature for Venus and Mars are as
Venus: 327 K
Mars: 225 K
Mars albedo temperature is closer to its black body temperature such that the Venus has more albedo.
Thus there is a chance that Mars would have had life in their history.