Crop raised to protect the main crop from adverse impact

Choose the words which are most opposite in meaning to the words mentioned below.

Trickster

What factors have had deleterious impacts on the ability of tank systems in Sri Lanka to sustain local ecosystems and combat drought?

What challenges can be addressed by the development of tourism, according to the African governments and development organizations?

What does the warmth in the oceans limit?

What was the timespan of the revolutionary period in Germany?

What led to the origination of the wells? 

Which of the following happened in Nepal in the 19^th century?

What international factors point to a positive projection of India's GDP growth acceleration?

Choose the word which is most nearly the same in meaning to the word ‘perennial’ as used in the passage.

What did the couple do after six months?