They are genetically modified through the insertion of genes which the plant would not ordinarily be able to mutate on its own.
More productive
Because of the opportunity GM crops provide for greater profit with less risk. Also GM crops give much bigger yields (bushels/acre) and thus more profit over crops that are not GMO.
Because some people do not agree with GM crops and it can cause controversal
They are not.
Gm crops are the genetically modified crops of food so they dont rot before there sell by date. they are enjected with a gene from another plant.
Some, though not all, corn and soybeans grown in the US have been genetically modified.
Because some people are worried that there are heath risks to eating foods that weren't created using natural methods.
Of course it is!
To combat pest and disease and yield a larger harvest. Most bugs are becoming resistant to GM crops. And the GM crops con not reproduce on their own, so these companys that make GM foods have a hold on the organic seed market making it harder for natural farmers to grow their own crops and the pollen gets blown onto organic fields preventing them from producing seeds. Messed up ain't it.
the main export market for Israel is Europe which does not approve of GM crops so the answer is: no, there are no commercially grown GM crops in Israel. however Israel it self is not against GM.
Corn and Soybeans
GM crops are produced much like other crops, except that many that are grown have been genetically engineered to be resistant to herbicides or to produce an insecticide in the plant itself.