In what ways is a declining fertility rate "bad for the economy" but "good for our planet"?

Cons:  Less humans made would mean that the food industry would fall because of the declining numbers of farmers. Less demand in a item or stock would mean that the business would go bankrupt

Pros:  Less demand=lower prices=more production   there would be less food shortages  and less usage of oil, water, electricity.

Explanation:

because the center-south is called the heart of the country