Question

is
the blanks :
Least Polluting
Polluting fuel__________​

Answer 1

$\huge { \underline{ \underline{ \mathtt{ \red{❥A} \pink{N} \green{S} \blue{W} \purple{E} \orange{R:-}}}}}$

Diesel

Answer 2

Answer:

compressed natural gas (CNG)

hope this helps!