What's a developed country?

A developed country in economics is a country that produces enough food to feed it's people and normally has some left over to export. It also has an industrial base that includes manufacture of consumer goods and a tooling industry to produce machines. It also has a relatively high (compared to poor countries) standard of living based on gross domestic product (GDP) per capita (person). Social development would mean the production of social goods for the common good like sewer systems, running water, roads, parks, etc. Ecological problems are referring to environmental problems in a country that pollute the air, water, or other resources. The term ecology refers to our ecosystem or how the sun affects our countries environment from climate to soil types (earth science). All biological development on our earth starts with our sun (ecosystem or our main energy source).