Question

1. To preserve the ecosystem, existence of
is essential
a. forests
b. animals
c. human beings
d. resources​

Answer 1

Answer:

a

Explanation:

a

b=c

multiply lhs by 0

multiply rhs by 0

lhs multiplied by 0=0

rhs multiplied by 0=0

lhs=0

rhs=0

0=0

lhs= rhs

hence proved

Answer 2

Answer:

a

Explanation:

a

b=c

multiply lhs by 0

multiply rhs by 0

lhs multiplied by 0=0

rhs multiplied by 0=0

lhs=0

rhs=0

0=0

lhs= rhs

hence proved