The correct answer is<span> The earth casts a shadow on the moon
The Earth casts a shadow on the moon and that's why we can't see the remaining parts. The parts that we can see are what we call the lunar phases.</span>
We can conclude that it is traveling at a constant rate of 60 miles per hour
120mi/2hrs
= 60
Decay of radioactive isotopes, differentiation of earths iron core, gravity-driven compression, and meteoric bombardment all caused early earth to be much hotter than at present.
The Earth was formed roughly 4.5 billion years ago. the atmosphere was predominantly consisted of methane (CH4) and ammonia (NH3). These <span>greenhouse gases and their </span>radioative forcing<span> kept the Earth’s atmosphere warm.</span>
Answer: 
Explanation:
This problem is related to the Rayleigh Criterion, which provides the following formula to find the acuity or limit of resolution of an optic system with circular aperture (the eye in this case):
Where:
is the angle of resolution (related to the acuity)
is the wavelength of the light
is the diameter of the pupil
Solving:
