Arguments against GM crops mostly focus on the dangers for human and animal health, risks to the environment, and whether they actually deliver on the promises to greatly increase food production, for example by making crops tolerant to pests, diseases or lack of water.
"The Administration believes that Congress should achieve significant budgetary savings to help reduce the deficit without creating hardship for vulnerable families -– for example, by reducing crop insurance subsidies," the White House said.
Domestic production appears to be rising, though Nigeria still has hardly any companies that add value to basic crops, for example by turning fruit into juice.
Evolutionary perspectives have contributed to agriculture, for example, by providing elements to understand crop adaptation to low-input production systems and trade-offs between different plant traits (Sadras and Denison 2009).
Approaches to correct for double-counting have been attempted, for example, by assessing the potential for multiple cropping systems based on agroclimatic variables [ Monfreda et al., 2008].
The Boserupian notion was further developed by many authors, for example, by proposing indicators that consider the differences in fallow and cropping period (e.g. [ 26,28]).
As for "difficult climatic conditions", the only evidence we have is that some GM crops have done particularly badly when stressed, for example by drought.
(Warmer weather can help crops, but it can also damage them, for example, by making pollen infertile).
For example, by measuring nitrogen fixation by plants, scientists hope to help farmers optimise their crop rotations and manage the soil effectively.
(For example, by embarrassing, by threatening, etc).
