Which the government has to contribute to​

I really don’t know what you are talking about but I think this is it

social grants - the government gives grants in many forms: unemployment insurance, financial help for families with low economic resources, low-interest credit.

Nutrition - the government provides school lunch to public schools under nutritional guidelines. The government also provides food stamps to poor families.

School fees - the government subsidizes primary and secondary education, either with public schools, or school vouchers. For tertiary education, the government offers student loans at low interest rates, and scholarships.

Health Care - the government provides Medicaid for poor families, and Medicare for the elderly. It also regulates the price of prescription drugs to some extent.

Housing - the government provides public housing to poor families, and also help families to access mortgages at lower interest rates.

  b.

there are isolated pockets of farming, generally around rivers and oases, which are used for irrigation.