The science was there. The economics were clear. Yet nothing happened for decades. Livestock feed supplements _____ on a large scale long before 2021 – someone just had to push for it.

Question

Accepted Answer

ought to have been developed and tested

Answer

ought to have developed and tested

Answer

ought to had been developed and tested

Answer

ought have been developed and tested

Crowdly

The science was there. The economics were clear. Yet nothing happened for decade...

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