premise: Ministers and government representatives from 78 countries on Tuesday called for urgent efforts to increase the global share of renewable energy in the total energy supply.
  They made the call in the Beijing Declaration on Renewable Energy for Sustainable Development, adopted at the conclusion of the Beijing International Renewable Energy Conference 2005.
  According to the declaration, increasing energy efficiency and the use of renewables boast multiple benefits.
  The benefits include accelerating the eradication of poverty, increasing job opportunities, improving air quality and public health, reducing greenhouse gas emissions, combating climate change and enhancing energy security.
  The declaration points out that the doubling of oil prices in less than two years has increased the economic risk of relying primarily on imported energy.
   What is caused by the use of renewables?
hypothesis: increasing job opportunities