Biogas is a renewable, as well as a clean, source of energy. Biogas plants significantly curb the greenhouse effect: the plants lower methane emissions by capturing this harmful gas and using it as fuel. Biogas generation helps cut reliance on the use of fossil fuels, such as oil and coal.
Answer:
I think it would be D. if not then its C.
Explanation:
They make the most sense.
Answer:
Islam spread through military conquest, trade, pilgrimage, and missionaries.
Arab Muslim forces conquered vast territories and built imperial structures over time.
Most of the significant expansion occurred during the reign of the Rashidun from 632 to 661 CE, which was the reign of the first four successors of Muhammad.
The caliphate—a new Islamic political structure—evolved and became more sophisticated during the Umayyad and Abbasid caliphates.
Explanation:
Please mark me brainliest
The Plains Indians were almost totally dependent upon the bison. They were a source of food, shelter, utensils, and clothing and most importantly spiritual strength. The American bison sacrificed its life to keep the American Indian in existence.
