Question

1. why must we conserve and find alternatives to non - renewable energy (fossil fuels and nuclear power)? sev3b

nonrenewable resources are the only fuels that can provide energy for our cars and homes.
renewable resources are made from nonrenewable resources.
it takes millions of years for fossil fuels to form, so we will run out.
nonrenewable resources are replenished quickly.

1. which energy source has no greenhouse gas emissions but has waste products that present a health hazard for humans? sev3b

petroleum / oil
uranium (nuclear)
coal
hydropower

1. which of the following demonstrates a person conserving energy? sev3c

john takes two long showers every day.
quan asks josh and amari to carpool with him to school.
maria leaves her television on 24 hours a day.
destiny drinks at least 5 colas a day and does not recycle the cans.

1. what will the continued burning of fossil fuels do for future generations?

sev3c
increase atmospheric oxygen available to organisms
increase the amount of fixed nitrogen available for plants
decrease the rate of sea level rise
increase the heat trapped by the greenhouse effect and cause catastrophic changes to precipitation rates and temperatures across the earth

Explanation:

5.

Non - renewable resources like fossil fuels (coal, oil, natural gas) and nuclear power (uranium) take millions of years to form. Fossil fuels are formed from the remains of ancient plants and animals that were buried and subjected to heat and pressure over geological time scales (millions of years). Nuclear fuel (uranium) deposits are also formed through slow geological processes. Since they cannot be replenished quickly, if we continue to use them at the current rate, we will run out.

• Petroleum / oil: When burned, it releases greenhouse gases (e.g., carbon dioxide).
• Uranium (nuclear): Nuclear power plants do not emit greenhouse gases during electricity generation. However, the radioactive waste products (such as spent fuel rods) are highly hazardous to human health as they can cause radiation - related diseases (e.g., cancer) if not properly managed.
• Coal: When burned, it releases large amounts of greenhouse gases (e.g., carbon dioxide, sulfur dioxide).
• Hydropower: It does not have greenhouse gas emissions from the power generation process itself and does not produce waste products that are a direct health hazard in the same way as nuclear waste.

• John taking two long showers every day: Uses a significant amount of energy (for heating water).
• Quan asking Josh and Amari to carpool with him to school: Reduces the number of vehicles on the road. Since vehicles consume fuel (a form of energy), fewer vehicles mean less energy consumption (less fuel burned).
• Maria leaving her television on 24 hours a day: Consumes electricity (energy) unnecessarily.
• Destiny drinking at least 5 colas a day and not recycling the cans: Recycling cans can save energy (as it takes less energy to recycle aluminum cans than to produce new ones from raw materials).

Answer:

It takes millions of years for fossil fuels to form, so we will run out.

6.