nope, the proper is Is in Snoop's sentence, as it refers to the ability to spell them correctly, as already pointed out.
if you want to fault his sentence, you need to look at his real error which was lack of proper punctuation
for example
coco coir, vermiculite, worm castings; is not rocket science.
over and out
if you want to fault his sentence, you need to look at his real error which was lack of proper punctuation
for example
coco coir, vermiculite, worm castings; is not rocket science.
over and out