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
3. right
7. wrong
To answer question 3, the reasons why people continue to use coal despite its environmental consequences can vary. Let's evaluate each option to determine the correct answer:
A. Using more coal reduces the amount of pollution from using oil: This option does not provide a valid reason for using coal, as it implies a trade-off between different sources of pollution. It does not address the negative impact coal itself has on the environment.
B. Using coal is relatively inexpensive: This is a commonly known reason why coal is still used. Its affordability makes it an attractive option for energy production, especially in certain regions or countries where other alternatives might be more expensive.
C. Mining coal helps scientists uncover fossils: While it is true that mining coal occasionally allows scientists to find fossils, this is not a sufficient reason for people to continue using coal as a fuel source. The discovery of fossils is more of an incidental benefit rather than a primary motivation for using coal.
D. Using coal, instead of wood from trees, helps conserve trees: This reason focuses on the conservation of trees, which is important for the environment. However, it does not address the negative impact of coal on air pollution and other environmental issues directly. Furthermore, using alternative energy sources like renewable energy could be a more effective way to conserve trees.
Considering the options, the correct answer to question 3 is B: Using coal is relatively inexpensive.
Now let's move on to question 7:
A. A factory burns coal to run its machines: This statement describes the consumption of a natural resource (coal) for industrial production, but it does not explicitly describe the conservation of resources.
B. A solar energy company harvests energy from sunlight: This statement aligns with the idea of conserving natural resources. Solar energy is renewable and does not deplete any finite resource, making it a sustainable alternative to traditional energy sources like coal or oil.
C. Lights in a house are turned off when not in use: This statement demonstrates the conservation of electricity, which is a natural resource. By turning off lights when not in use, individuals conserve energy and reduce their overall consumption.
D. A wind Energy Company covers a hillside with wind turbines: This statement also aligns with the conservation of natural resources. Wind energy is renewable and harnessing it through wind turbines reduces reliance on non-renewable resources like coal or natural gas.
Based on the given options, the correct answer to question 7 is C: Lights in a house are turned off when not in use.