Fill in the blanks with an appropriate word in each gap.

In recent years there have been many alarming reports that the world's climate is undergoing a  significant changE- All these reports provide (a) ____ evidence that world's temperatures are  increasing day by day. This increase in global (b) ____ is caused (c) ____ increased amount of carbon-di-oxide (d) ____ the earth. Most climatologists (e) ____ that greenhouse effect is the likely cause of  this global warming. It may harm human (f) ____ seriously. This could catastrophically (g) ____ mankind's (h) ____ grow food