Answer:
The relationship between the warming of the earth’s northern latitude and ice is a practical example of a positive feedback on the earth system.
Explanation:
A positive feedback is a process that brings about an increase in the process of interaction in the earth activities The warming of the northern latitude which is responsible for generating more heat through sunlight with time, usually results in an increase in the melting of ice bodies in the ocean by movement. This activity is regarded as positive because it is associated with an increase in the process. This process is directly proportional to the exchange activities that takes place and often leads to an equilibrium in the earth system.
Answer:
Quartz is not pure in this rock.
Explanation:
When quartz shows effervescence in contact with an acid, it means that it is not in its pure state, but rather related to other substances that may be cementing the quartz. This effectiveness is caused by substances that do not react like quartz, such as calcite.
In this case, we can conclude that in relation to the calcium-rich rock shown in the question above, the calcium is not pure, but it is likely to be related to calcite, or other material that does not react to acid.
