Question

ups of words that are the subjects of the sentences
1. An American astronomer named Clyde Tombaugh discovered Pluto in 1950
An American astronomer named Clyde Tombaugh
b An American
discovered Pluto in 1930.
2. For more than 70 years, Pluto was one of nine planets recognised in our solar system
For more than 70 years
b. Pluto
Pluto was one of nine planets
3. But in 2006, the International Astronomical Union demoted Pluto to the status of a dwarf
planet
But in 2006
b the International Astronomical Union
the status of a dwarf planet
4. In the years that followed, scientists started to wonder if Pluto was just one of several small
icy bodies that were discovered beyond Neptune,​

Answer 1

Answer:

1=a

2=b

3=b

4=a

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