Fill in the blanks with words from the box. You may need to 0.5×10-5 change the form of some of the words. 

to	an	moreover	differ	irrigate
us	wood	fish	on	diverse

The environment is everything around us. Trees in the hills and forests are the part of our environment. They give us (a) ________ and oxygen. We grow (b) ______ crops (c) ______ vast plane land. We get (d) ______ from the rivers, haor-baor and canals.(e) ______ , these water-bodies help (f) _______ travel, transport goods and (g) _____ land. All these (h) ______ elements of environment together play (i) _____ important role (j) ______ maintain environmental harmony.