Why is it difficult for the governments of developing countries to provide their citizens with clean water and sewage treatment

Barriers to addressing water problems in developing nations include poverty, climate change, and poor governance. The contamination of water still remains a huge problem because of the normalization of practices that pollute the quality of water bodies. 2.3 billion people lack access to basic sanitation services, such as toilets or latrines. Worldwide, over 80% of all wastewater returns to the environment without being treated. Every day, more than 800 children under five years of age die from diarrhea caused by dirty water.

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.

plant because they survive by water, sunlight, ex.

explanation: