How to Use "nullify" with Example Sentences

1. These could nullify efforts by farmers to increase planting areas in response to the highest prices since the 2007-08 food crisis .
2. So little electricity do these panels produce under its cloudy northern skies that the emissions from a single large coal-fired power station are enough to nullify all the benefits that their carbon-free contribution might bring .
3. But he doesn 't want to do so in the u.s. because assuming a new job or even changing titles within his own company would nullify his existing green card application .
4. In march , the ministry of finance moved to nullify the guarantees local governments provided for loans taken by their lgivs recognising that in some cases , the guarantees were the only creditworthy assets the vehicles had .
5. The kremlin has given mixed signals about how far it will seek to nullify these accords , and how much these moves have been caused by the missile-defence row .