Question

1- a) What are the main reasons why human beings are over - exploiting the forests? b) What are the effects of damages? c) Name the different measures taken up for the conservation of forests? 2- a) Why do we classify elements? b) What were the two criteria used by Mendeleev in creating his periodic table? c) In Mendeleev 's periodic table, why was there no mention of noble gasses like helium, neon and argon? d) Why did Mendeleev leave gaps in his periodic table? e) Would you place the two isotopes of chlorine, Cl-35 in different slot because of their different atomic masses or in the same slot becuase their chemical properties are the same? Justify you answer/

Answer 1

Human beings are over exploiting the forest because of many reasons first of all they want a place to live on their as a human being they have to eat something so they required food from forest after this for the movement they are also using words to travel over the seas

The effect of the damages Aaaa day by day by the human activities greenhouse effect is increasing polar ice caps melting people are facing respiratory diseases and the main global warming is increasing