Skip to content / Đến nội dung
SachHeCam.com

Cambridge Secondary (7-9). Stage 8. MCE Science. Student Book - Unit 7: Exothermic and Endothermic Changes - Question 1

Cambridge Secondary (7-9) · Unit 7: Exothermic and Endothermic Changes

Question 1

We burn fuels for cooking and to obtain heat. However, nearly three billion people around the world do not have access to clean fuels. Many communities use firewood and animal manure as fuels. When these fuels burn, they release large amounts of air pollutants into the atmosphere.

The photograph shows a biogas digester. Biogas digesters are simple containers filled with bacteria that break down organic materials, such as crop waste and animal manure. This process produces biogas.

How can the use of biogas digesters help reduce poverty and global warming?

Question illustration
0
0
GIỎ HÀNG
Empty CartGIỎ CHƯA CÓ GÌQUAY LẠI SHOP