They eat the plants and affect their growing process, also, they make crops unable to be sold.
Yes, global warming can affect crops in several ways. Increased temperatures can alter growing seasons and shift suitable growing regions for crops. Extreme weather events, such as droughts, floods, and heatwaves, can also damage crops and reduce yields. Changes in precipitation patterns and increased pests and diseases due to warmer temperatures can further impact crop production.
the rain
Yes precipitation (snow) is bad for growing crops
Crows can eat crops in the fields, that farmers are growing.
Pests have been causing imense damage to crops for thousands of years
Pesticides remove pests which are detrimental to other human processes such as growing crops, or being able to go outside without the risk of insect bites and/or contracting disease carried by pests.
The growing of cash crops affected the societies in the states of Virginia and Maryland because it caused them to invade the Native Americans to take their land. Growing certain cash crops was hard on the soil and they needed more land.
Insects
The affect of rivers flooding in Mesopotamia was that the rivers would deposit silt which was very good for growing crops
Some disadvantages of growing genetically modified crops include potential harm to non-target organisms, reduced biodiversity, development of resistance in pests and weeds, and uncertainty about long-term environmental and health effects.
Pesticides.
They can do damage to crops and are thus classed as insect pests, though somewhat comical looking. The number one affect I have noticed is that I find them interesting and slightly funny to look at.