The core is made almost entirely of metal. specifically, iron and nickel. The answer is A. hope this help :)
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.
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<span>It used renewable resources.
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