Is ddt harmful to birds because it prevented them from laying eggs?

Yes it is. This is because with no eggs being layed, then the bird population will go down. Hope my answer was useful. 

True DDT harmful to birds because it prevented them from laying eggs.

Explanation:

True,DDT harmful to birds because it prevented them from laying eggs. and its metabolite change the hormones, that alter the calcium metabolism and affect the reproduction and growth of birds exposed to it. They suffer from reproductive collapse as their eggs needed sufficient calcium.DDT weakened and thinned eggs of birds that result in the death of their embryo.

The federal reserve took an expansionary approach during the crisis. this was done by expanding the money supply and boosting liquidity. this can be seen in the fed's actions of lending to banks, purchasing securities, and lowering the federal funds rate in order to lower overall interest rates. the fed's goal was to increase consumer spending and overall liquidity within the system, and they pursued this by expanding the supply of liquid money.