3. right
7. wrong
3. Using coal for fuel releases pollution into the atmosphere. Why do people continue to use coal if it causes pollution?
A. Using more coal reduces the amount of pollution from using oil
B. Using coal is relatively inexpensive.
C. Mining coal helps scientist uncover fossils
D. Using coal, instead of wood from trees, helps conserve trees
7. Which of the following statements describes the conservation of a natural resource?
A.A factory burns coal to run its machines
B.A solar energy company harvests energy from sunlight
C. Lights in a house are turned off when not in use
D.A wind Energy Company covers a hillside with wind turbines
My answers:
B
B/D
2 answers
How many joules are absorbed by 45.2 g of aluminum if its temperature rises from 12.5 °C to 76.8 °C (See Table)?
3 answers