It's the pesticides that are used that are "killing off" or decreasing bee populations. Global warming/climate change may also have something to do with it, but the biggest factor is the use of pesticides.
Wanton killing of rattlesnakes by those who are ignorant of the value of the snakes to the environment and habitat loss is causing numbers to decline in some areas.
If the numbers of a species begin to decline dramatically, the species becomes known as an "endangered" species. When the numbers decline so far that the species no longer exists, the species is known to be "extinct."
In 1960, there were approximately 25 million dairy cows in the United States. This number has significantly decreased over the decades due to advancements in dairy farming technology and changes in milk production practices. Despite the decline in cow numbers, overall milk production has increased due to higher milk yields per cow.
Immigration numbers did not decline.
black people
Kakapo numbers are increasing. Since the Kakapo Recovery Programme came into effect and kakapo have been moved to three protected islands off the southern coast of New Zealand, kakapo numbers have doubled from a critical 65 to around 130.
Sexual Frustration.
The number of European farmers is decreasing due to various factors, including urbanization, aging populations, and economic pressures. Younger generations are increasingly moving to cities for better job opportunities, leading to a decline in rural labor. Additionally, the challenges of low agricultural incomes, competition, and stringent regulations make farming less appealing. As a result, many farms are being consolidated or abandoned, contributing to the overall decline in the farming population.
The Trumpeter Swan was hunted for its feathers throughout the 1600s - 1800s, causing a tremendous decline in its numbers. Its largest flight feathers made what were considered to be the best quality quill pens.
it didn't thats why its in decline
They are hunted by humans, and reduces habitat is probably the the greatest causes of decline.
No, although there has been a noticeable decline in numbers, they are nowhere near extinct.