Answer to Question 1
Some magmas would not form because water lowers their melting point so that melting can begin.
Some forms of physical weathering, especially freeze/thaw processes, would not occur. Many forms of chemical weathering would not occur.
Erosion involving water would not exist.
There would be no clastic sedimentary rocks that were transported and deposited in water. Those that did exist would not have a cement that formed from an aqueous solution.
There would be no chemical and biogenic sedimentary rocks.
Hydrous minerals would not exist.
Hydration and dehydration reactions would not occur during metamorphism. Many metamorphic reactions would slow down.
Answer to Question 2
The outer planets had to form before solar wind and high temperature from the Sun stripped gases from the solar system. Lower temperatures are necessary for dust particles to form by condensation. The center of the solar nebula was the hottest. The first place in the nebular disk where it would have been cool enough for condensation would be near the outside. The region where the inner planets eventually form would still be too hot.
Microscopic photo taken by Opportunity showing a gray hematite concretion, indicative of the past pr
Ripples in Water
Water Solubility of Selected Chemicals
Inefficient irrigation wastes water
The ras proto-oncogene encodes a signal-transduction protein that processes signals for cell divisio
The eukaryotic cell cycle.