Mars
equatorial region
Venus and Mars are the least alike in our solar system. Venus is a hot, inhospitable planet with a thick atmosphere and surface temperatures hot enough to melt lead, while Mars is a cold, arid planet with a thin atmosphere and surface temperatures that can reach below freezing.
Surface liquids indicate that there can be a gaseous atmosphere, as surface liquids and volatile ices are heated. Liquid hydrocarbons such as ethane show a very cold planet. Liquid sulfur shows a very hot interior. Liquid water shows a warm temperature, an indicator of possible lifeforms (on the surface or in the interior, under an ice shell).
Yes, magnetic variation changes with latitude. The magnetic variation is the difference between true north and magnetic north at a specific location on the Earth's surface, and this difference varies depending on the latitude of the location. At the magnetic poles, there is no difference (variation is 0), while at the equator, the variation is usually its maximum value.
Uranus experiences the least temperature change of all the planets in our solar system. This is because it has a very thick atmosphere that helps regulate its temperature and distribute heat evenly. Additionally, Uranus' axial tilt is such that its poles receive a similar amount of sunlight throughout its orbit.
The hottest (surface temperature) is Venus then, getting colder: Mercury, Earth, Mars, Jupiter, Saturn, Neptune and Uranus. (In fact Neptune and Uranus are very similar in temperature.)
equatorial region
The climax stage of succession would most likely experience the least variation in daily temperature. This is because the climax community has a mature and stable ecosystem where the environmental conditions are relatively constant and well-balanced, leading to minimal fluctuations in temperature.
Pluto. It is the 9th planet from the sun and it is very different then Earth in size and temperature
Lakes usually have the least variation in salinity.
Neptune is the most unknown since it's far away
Physical weathering from temperature changes would be least common in polar regions where temperatures remain consistently low, as there is little variation in temperature to cause the expansion and contraction of rocks.
Mercury, because it's the smallest if you don't consider Pluto to be a planet.
~mountains... well thatz a start... forgot the other 2...
tropic of cancer
According to Oklahoma Edition of McDougal Littell Science Grade 7 the Terrestrial Planet that has the oldest least changing surface is Mercury. Mars has wind that carries sand that changes its surface. Venus has volcanoes and tectonic plates that change its surface. We know that Earth has erosion, volcanoes and tectonic plates that change the surface. This leaves Mercury.
Since sound waves are a compression and rarefaction in the atmosphere, the planet with the least atmosphere (most like a vacuum) would be least likely to have audible sounds on its surface. In our solar system Mercury stands out as the best candidate here since it has almost no atmosphere.