Petroleum is used in manufacturing a wide variety of materials, and it is estimated that the world consumes about 90 million barrels each day. Concern over the depletion of the earth's finite reserves of oil, and the effect this would have on a society dependent on it, is a concept known as peak oil.
The National flag of St. Kitts & Nevis features green for our fertile lands, yellow for our year-round sunshine, black for our African heritage, and red for our struggle from slavery through colonialism to independence. It also displays two white stars on a black diagonal bar, symbols of hope and liberty.
Grenada Flag Meaning: The color yellow in Grenada's flag symbolizes the sun and the friendliness of the inhabitants; the green represents the country's vegetation and agricul â¦ ture; and the red stands for the courage and vitality of Grenada's people. The yellow stars represent the seven parishes of the country.he colours on the Aboriginal Flag mean:     Black-Represents the Aboriginal people     Red-Represents the Earth and the spiritual relationship with the land â¦ , and     Yellow-Represents the Sun, the giver of life.