How would the carbonate-silicate geochemical cycle respond to a long-term decrease in surface temperature and precipitation?
a. carbon dioxide would accumulate in the atmosphere as the weathering rate decreased, acting as a negative feedback
b. carbon dioxide would accumulate in the oceans as the weathering rate increased, acting as a positive feedback
c. carbon dioxide levels would decrease in the atmosphere as the weathering rate increased, acting as a positive feedback
d. volcanism would increase as a result of the decrease in surface precipitation, increasing carbon dioxide levels and acting as a negative feedback

C. Carbon dioxide levels would decrease in the atmosphere as the weathering rate increased, acting as a positive feedback

Explanation:

The CO₂ concentration decreases due to large scale weathering process of silicate and carbonate weathering . The weathering of silicate and carbonates affect this way . As CO₂ in the atmosphere decreases the global temperature decreases , resulting in global cooling or ice age. During ice age we will have less precipitation .

the proximity of water was an advantage to western europe and its culture was able to flourish as a result. trade and travel by sea were easier and safer in historical times.

1. there are no mountains to protect it from the sea

2. and its has wet cool summers and wet, mild winters.