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Why are bees disappearing?
There are numerous studies that try to explain why bee populations and honey production are decreasing. However, the reason for this is still not known with complete certainty.

They have been studying different cases since 2000. For example, one of them is the problem of "collapse of bee colonies". This problem is that a considerable amount of worker bees disappear suddenly from the hive. It is the worker bees that are in charge of pollinating and bringing food to the hive. The causes of this sudden disappearance can be several:

For an increase in the predators of these bees due to changes in ecosystems.
Appearance of diseases that affect bees and are contagious with relative speed. An example of disease is the watery paralysis virus of Israel, which causes immobility in the wings and death.
The possibility that bees are affected by pesticides or other toxic substances used by humans in agriculture is also being studied.

Other threats to which bees are subjected are:
• Climate change. The increase in global temperatures are causing an imbalance in the distribution area of ​​many animal and plant species throughout the world. Animals that could survive in just a range of temperatures, now can be extended by larger areas to have varied the temperature. This has caused the appearance of several new predators that affect the bees and cause their population to be reduced. For example, Japan's killer hornets, thanks to climate change, have increased their range. These wasps are lethal to bees, to such an extent that only a few of them can kill an entire hive.
• The air pollution. The human being pollutes the air in an almost extended way. The concentrations of greenhouse gases are increasing every day and this can affect the bees as well. In places where the air is very polluted the population of bees may be affected. Air pollution also reduces the power of the chemical messages that flowers emit to bees and makes it harder for them to locate them.
• The fragmentation and deterioration of habitats. A fragmentation of a habitat negatively influences the area of ​​distribution and expansion of plant and plant species. In this way, the bees have to increase the distances to find the flowers. With the deterioration of habitats, the number of plant species and their richness decreases. With this state of the ecosystem, bees are diminished their resources and there is a possibility that they have to migrate to other richer ecosystems and take risks that entails.

• Change in land uses. This is more than obvious. With urbanization worldwide, the construction of towns and cities, the soils do not support the necessary vegetation to feed the bees. In urban areas, there are no populations of bees or plants that can feed them, nor can they pollinate them.
• As we have previously mentioned, the types of crops in agriculture can also negatively affect bees. If it is monoculture or transgenic. They are also affected by pesticides and herbicides and other chemical products used in agriculture. These chemicals affect the orientation of the bees, their memory and their metabolism.
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