Some varieties of food crops have been genetically modified in an effort to improve upon a certain trait, such as pest resistance or longer shelf life. However, there are also concerns with genetically modified crops. Which of the following is most likely a concern about genetically modified crops? There may be an increase in global food prices.

There may be an increase in pest populations that adapt to the modified traits in the crops.

There may be a decrease in the range of environmental conditions in which a crop can survive.

There may be a decrease in the amount of time that fruits or vegetables stay fresh in the supermarket.

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

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above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.