human survival will depend on effective measures to cope with ecological problems to a certain degree only.
This is a very good, clear thesis, but I think you should list words that tell what the paragraphs will cover:
improving _____ and taking ______
like this:
...human survival will depend on effective measures to cope with ecological problems to a certain degree only, and the most important aspects might be improving education about environmental issues and taking proactive measures to protect the environment.
If you follow my advice (above), your thesis statement at the end of paragraph one will "support" the body paragraphs by mentioning their main ideas. A good, complex thesis statement is like tasty, healthy multigrain bread.
Here is a grammar correction:
This has been proven successful in saving human lives
from in the example of Tilly Smith, a 10 y
ear-ol d British girl. She remembered
something important from her geography lessons on the warning signs of a tsunami.
:-)