Answer:
A. Obsidian
Explanation:
It fits the property described in the question.
It cools so fast that no visible crystal or grain could form. It has high silica Composition, black and glassy. It is also used to make tools with sharp edges
Hoyt's model of land assumes that the city or business district is the epicenter.
Answer:
Minerals precipitated from solution as water evaporates and materials formed through biological activity such as making shells or other hard parts
Hope this Helps!
Answer:
C. Europe wanted Africa's valuable resources
Explanation:
During this time, many European countries expanded their empires by aggressively establishing colonies in Africa so that they could exploit and export Africa's resources. Raw materials like rubber, timber, diamonds, and gold were found in Africa. Europeans also wanted to protect trade routes.
Answer:
The answer would be contamination of groundwater.
Explanation:
