Soil is a very useful resource. Overuse of chemical fertilisers has posed a serious threat to the health of the soil in India. How can we
reduce the use of chemical fertilisers in India? Suggest three ways.

Which of the following is evidence to the past existence of glaciers?

What evidence does the writer give to support his argument about coral reefs? a) he speaks of the activities of coral polyps. b) he describes the composition of the great barrier reef. c) he emphasizes the ways in which coral reefs are fragile. d) he points out the ways that scientists do research on the reefs.

Which statement about factories in the industrial revolution is not true? a) some of the first advances were in textile mills b) spinning machines used water power c) water power was replaced by steam power d) coal was imported to english factories for power answer d) coal was imported to english factories for power