•Humans (biosphere) built a dam out of rock materials (lithosphere). Water in the lake (hydrosphere) seeps into the cliff walls behind the dam, becoming groundwater (lithosphere), or evaporating into the air (atmosphere).
Answer:
Silicate-Oxygen tetrahedro
Explanation:
Silicate-Oxygen tetrahedro are the most abundant and basic structure of common minerals.
These are silicate minerals which formed to silicate rock forming mineral. These constitute about 90% of earth crust. Silica SiO2 consider as most common mineral on the surface of earth also known as Quartz. The the most andundant element in the earth crust is oxygen, mainly found in combine form.
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.
Well to find this out you need to make an equation
s+7=j
So for example if Johnny's sister is 15 then Johnny would be 22 because
s(sister's age) +7(number of years difference between their ages)=22(Johnny's age)
