Read the following text and fill in the blanks with suitable words from the box. There are more words than needed. Make any grammatical changes if necessary-

ecosystem	hang	example	rise	interrelated	fixed	sake
balance	alter	ecology	world	link	know	responsible

All things that make up the environment are (a)---.The way in which people, animals and plants are related to each other and to their surroundings is (b)--- as ecology. The (c)-- - is a complex web that (d)--- animals, plants and every other life form in the blosphere. All these things (e)--- together. The system is in a steady state of dynamic (f)--- which means that by (g)--- any one part of the web you can affect all the other parts. For (h)--- the destruction of forests may have serious (i) --- consequences. It is the (j) of human beings to prevent the environment from being spoilt