Question 2:

 Main factors responsible for biodiversity loss are ______, ______, _____, ______ and ________.

Question 3:

 Earth has experienced ____ major extinctions, and we are currently experiencing the ____ one.

Question 4:

________ provide us benefits that directly or indirectly support our survival and quality of life. They help to maintain balance in nature.

Question 5:

 Animals that feed directly on plants are called __________

Question 6:

 _________ is the life supporting zone of Earth, where litosphere,atmosphere, and hydrosphere meet and interact.

Question 7:

 ________ and _________ are examples of extinction of species due to their inabilty to adapt to the pressures of the changing environment

Question 8:

____________ is always larger than a __________. The former contains many of the latter.

Question 9:

 An ecosystem consists of _________ and ___________ factors.

Question 10:

 _______ is necessary for our existence, as it forms the life support system of our planet and its inhabitants