Talk about sustainable development as an idea.

Calculate the annual rate of natural increase of a population(r) from the following data: the population has 1000 individuals, a birth rate of 60 per year and a death rate of 10 per year.

Describe any one of the following biomes and write also about the threat faced by it. i) Tundra ii) Tropical rain forest

What does the phrase “biome” mean to you?

Compose a brief essay about solar power.

Write a brief essay about the ailments caused by noise pollution.

Write a brief essay about how animals are affected by air pollution.

Write a brief remark on chemicals used in plant protection.

Write a brief essay about illnesses that spread.

Discuss how different human activities contribute to land deterioration using appropriate examples.