Plants don't cause weathering. They can't round out a rock or create a smooth side.
The answer is: B.drained their economic resources
During its military build-up, soviet union allocate most of their government budget to military and they also require the manufacturers in its territory to focus their operation in military weapons , vehicles, and supplies.
This caused the economic resources in soviet unions to be drained and the needs for goods that unrelated to military became abandoned.
I personally think the answer is a
The colonies helped by securing their borders.
I don’t know if this is right, but i hope this helps!
<span>According to the national institutes of health, 65 percent of adult americans were overweight or obese in 2005, and 16 percent of american children were overweight.
The expert suspect that this number is caused by both the development of modern technologies that make the people tend to stay indoor with their gadgets rather than doing physical activities and the increase of junk food manufacturers.</span>
