158. Which of the following statements clarifies the term "homosapiens" A)An replaceable ecosystem which is being destroyed.
B) Another term which is used to call the human race.
C) A way of referring to a huge number of species of flora and fauna.
D) A hostile environment in which species peciese die.
159. What future expectation is stated by the author? A) the world might be turned upside down by colliding with an asteroid.
B)There will be no harmful effects from so many species flying.
C) the human population will soon reach six billion.
D) More species may die out this time than ever before.