Sinkholes are common where the rock below the land surface is limestone, carbonate rock, salt beds, or rocks that can naturally be dissolved by groundwater circulating through them. As the rock dissolves, spaces and caverns develop underground.
Sinkholes are formed when the land surface above collapses or sinks into the cavities or when surface material is carried downward into the voids. Drought, along with resulting high groundwater withdrawals, can make conditions favorable for sinkholes to form.
Explanation:
Well if you think about it...
Venus is to _____. (hot)
So they can't land on it.
Mars is _____. (Not nerarly as hot)
So they can land on it.
So missions to Mars is way safer.
Hope this helps! Sorry if it was not what you were looking for ...
Answer:
five
Explanation:
the first week was randomly selected from the two types. which arch support is better
In the socialist systems the state shares economic control with private enterprise.
Explanation:
The socialist systems are systems where the economy is of mixed type. This is due to the transitional nature of the socialist system, so it has elements of both the system from which it is moving away, and from the system toward it is striding to. In general, it is traditional or market economy from which this system is moving away and transforms into communism, though there are few exceptions that are in the opposite manner.
While the private enterprises are allowed to exist and prosper, there are some limitations, as they are often obligated to be business partners with the state and have to stick to the state's rules. Also, the state is a powerful player on the market, owning and controlling the most important resources and infrastructure.
