Discuss how most of the energy sources on earth originally came from the sun.
What will be an ideal response?
Fossil fuels (oil, natural gas, coal) are all forms of sun energy that was originally absorbed by living things and then transformed over millions of years into fuels that can be burned (oxidized) to release their stored sun energy as heat. Hydro-power is also sun energy that causes evaporation of surface water and generates weather systems in the atmosphere. Evaporation and weather systems both use sun energy to lift water from the oceans and deposit it as rain or snow in higher elevations on land. As this water flows down again to the sea, its movement provides energy to drive turbines that produce much of our electric power
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NEC Article 250 contains requirements for _____.
a. overcurrent protection b. grounding and bonding c. calculating branch circuit loads d. branch circuit installation
Identify the sweet fluid that flowers secrete and insects use for food
A) nectar B) honey C) pollen D) syrup
Answer the following statement(s) true (T) or false (F)
1. The positively charged particle has been given the name proton; the negatively charged particle is called an electron. 2. The nucleus of the atom is the name given to the tightly packed, heavy central core where the protons of the atom are assembled. 3. The arrangement of electrons around the atom determines most of the physical and chemical properties and the behavior of an element. 4. Metals are fairly good conductors of electricity because they have many free electrons that can move from atom to atom. 5. The word ion refers to an electrically balanced atom.
The predecessor to WTO was the Agreement on Free Trade (AFT)
Indicate whether the statement is true or false