NEDP Environmental Awareness

Question 1

What is the greenhouse effect?

Accepted Answer

The trapping of heat by gases in the atmosphere, warming Earth's surface

Answer

Greenhouse gases (CO₂, methane) trap solar heat in the atmosphere, keeping Earth warm — but excess gases intensify this, causing climate change.

Question 2

Which of the following is an example of a renewable energy source?

Accepted Answer

Solar power

Answer

Solar power is renewable because the sun's energy is replenished naturally and will not run out on human timescales.

Question 3

What does 'biodiversity' mean?

Accepted Answer

The variety of living species in a given ecosystem or on Earth as a whole

Answer

Biodiversity refers to the variety of life — species diversity, genetic diversity, and ecosystem diversity — which supports ecological stability.

Question 4

What is the correct recycling hierarchy, from most to least preferred option?

Accepted Answer

Reduce, Reuse, Recycle

Answer

The '3 Rs' hierarchy prioritizes reducing consumption first, then reusing items, and recycling only as a last resort — all better than landfill.

Question 5

What is 'deforestation' and why is it an environmental concern?

Accepted Answer

The large-scale removal of forests, which reduces carbon absorption, destroys habitats, and contributes to climate change

Answer

Deforestation removes trees that absorb CO₂, displaces wildlife, erodes soil, and disrupts water cycles, contributing to climate change.

NEDP - National External Diploma Program Practice Test