Question

In a comparative analogy between the airplane and ecosystem (the ‘rivet popper hypothesis) used by Stanford
ecologist Paul Ehrlich, find out the correct matching.

	Column I		Column II
a.	Rivets	1.	Ecosystem
b.	Airplane	2.	Species
c.	Popping a rivet	3.	Key species
d.	Rivets on the wing	4.	Proper functioning of ecosystem
e.	Flight safety	5.	A species to become extinct

• A. $\begin{array}{ccccc}\text{a}& \text{b}& \text{c}& \text{d}& \text{e}\\ 2& 1& 4& 5& 3\end{array}$
  
• B. $\begin{array}{ccccc}\text{a}& \text{b}& \text{c}& \text{d}& \text{e}\\ 2& 1& 5& 4& 3\end{array}$
  
• C. $\begin{array}{ccccc}\text{a}& \text{b}& \text{c}& \text{d}& \text{e}\\ 1& 2& 3& 4& 5\end{array}$
  
• D. $\begin{array}{ccccc}\text{a}& \text{b}& \text{c}& \text{d}& \text{e}\\ 2& 1& 5& 3& 4\end{array}$
  

Answer 1

The correct option is D $\begin{array}{ccccc}\text{a}& \text{b}& \text{c}& \text{d}& \text{e}\\ 2& 1& 5& 3& 4\end{array}$


Correct match

Column I		Column II
a.	Rivets	2.	Species
b.	Airplane	1.	Ecosystem
c.	Popping a rivet	5.	A species to become extinct
d.	Rivets on the wing	3.	Key species
e.	Flight safety	4.	Proper functioning of ecosystem

Final answer
$\begin{array}{ccccc}\text{a}& \text{b}& \text{c}& \text{d}& \text{e}\\ 2& 1& 5& 3& 4\end{array}$