Which statement describes a potential environmental issue associated with renewable energy?

• A. No environmental concerns
• B. They release more CO2 than fossil fuels
• C. Habitat or land-use impacts and intermittency
• D. They always provide constant energy

Answer: (C)

Renewable energy brings big environmental benefits, but it also comes with certain impacts that students should be aware of. The best description of a potential environmental issue is that renewable energy projects can create habitat or land-use impacts and face intermittency.

Land-use and habitat concerns arise because large solar farms or wind installations require substantial areas of land and can fragment habitats, affect wildlife (such as birds and bats around turbines), or alter local ecosystems. Hydropower can flood areas and change aquatic habitats, while bioenergy can compete with food crops or lead to deforestation if not managed carefully.

Intermittency refers to the fact that solar and wind generation depends on weather conditions, so output isn’t constant. This variability necessitates storage, backup power, or grid management to keep supply reliable, which introduces additional environmental and resource considerations but generally results in lower net emissions than fossil fuels.

The other statements aren’t correct because renewables do have environmental concerns, their life-cycle emissions are typically much lower than fossil fuels, and they do not provide energy in a perfectly constant, uninterruptible way.