Question

which of the following best describes the long - term impact of using a renewable energy source?
hydro power involves blocking rivers, which disrupts ecosystems.
geothermal energy can pollute water supplies.
nuclear power produces radiation, which is harmful if leaked.
natural gas causes air pollution when burned.
question 23(multiple choice worth 4 points)
(04.04 hc)
scientific research shows that our global climate is changing as a result of an increase in greenhouse gases. the global sea level is rising, and ocean temperatures are increasing. which of the following best predicts an outcome of this global climate change in a coastal ecosystem?
the change in temperature will cause organisms that are sensitive to cold to migrate to the area.
the milder temperature will encourage a growth in the diversity of sea life.
the loss of habitat will lead to endangering or extinction of species living there.
the rising sea level will provide water during drought to species living there.

Explanation:

For the first question:

• Hydropower is a renewable energy source. Blocking rivers (a long - term aspect of hydropower infrastructure) disrupts ecosystems. Geothermal energy (if managed properly, the pollution of water supplies is more of a local and often mitigatable issue, not a typical long - term impact of the energy source itself). Nuclear power is not a renewable energy source. Natural gas is a non - renewable fossil fuel.

For the second question:

• As global sea levels rise (due to climate change from increased greenhouse gases), coastal habitats (such as mangrove forests, salt marshes) are lost. Organisms that depend on these habitats will face endangerment or extinction. Organisms sensitive to cold would not migrate to an area with rising temperatures. The increase in temperature and sea - level rise is more likely to cause a decrease in biodiversity in coastal ecosystems rather than an increase. Rising sea - level brings saltwater, which is not useful for species that need freshwater during droughts.

Answer:

First question: Hydropower involves blocking rivers, which disrupts ecosystems.
Second question: The loss of habitat will lead to endangering or extinction of species living there.