Ways to express causes:
  1. the major cause of     because of      due to
    is another major factor contributing to


Ways to express effects:
  1. is causing     the serious impact this was having
    this situation could trigger     the consequences     the upshot of this
    could cause     has resulted in     this could (possible effect)         
    will offset....and increase (probable effect)

Once you have done that, click on the check button and the definition will appear for you to check your suggested answers.