How might the carbonate-silicate cycle have helped to solve the faint young Sun problem?
What will be an ideal response?
The carbonate-silicate cycle contains a negative feedback loop that would have mitigated the impacts of the decreased solar luminosity. If the Earth was relatively cool 4 billion years ago, then silicate weathering would have slowed down and the rate of drawdown of CO2 from the atmosphere into the oceans would have also decreased. Slowing down the removal of CO2 from the atmosphere allows CO2 concentrations to increase, thus creating a greater greenhouse effect that compensates for the lower solar luminosity.
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Compare and contrast the light silicate minerals and dark silicate minerals, and give examples of each
What will be an ideal response?
Describe the processes and social outcomes of filtering and gentrification in inner-city neighborhoods
What will be an ideal response?
Archaea is one of the three major branches of life, along with animal and plant.
Answer the following statement true (T) or false (F)
Soil belongs to the ________
A) geosphere B) hydrosphere C) biosphere D) atmosphere E) All of the above