A geologist studies rocks and such
        
             
        
        
        
Answer:
We hear a lot about the amount of carbon in our atmosphere increasing, but the actual number of carbon atoms on our planet has not changed since the Earth first formed. It's just that more carbon is spending more time as gas.
Explanation:
 
        
             
        
        
        
 Answer: c. alluvial fan.
A wide sloping deposit of sediment formed where a stream leaves a mountain range is called an alluvial fan. An alluvial fan is the deposition of sediment on a landform like mountain. It forms as an open fan or cone of sediment. The sediments are left by natural drainage system like river on the landform. 
There are two types of alluvial fans.
1. Debris dominated: These includes viscous mixture of water, mud, gravel along with woody debris. This transfer large boulders of landform soil.
2. Floodwater dominated: Water will spill in the alluvial fan in the form of thin sheets. This can transfer fine particles of landform soil. 
 
        
             
        
        
        
Hi! Can you please upload the possible answers?
        
             
        
        
        
rain or thunderstorms
typically thunderclouds and storms are the post affect of a cold front, causing D to be your answer, MrKnowledge