Nodding flowers are best adapted for the long hummingbird beak. Hummingbirds intrigue with their tiny bodies and rapidly fluttering, buzzing wings. They are a joy to watch and planting a garden to attract hummingbirds is rewarding. When planning, there is more to consider than color when choosing plants.
So, while pretty much everyone can hear frequencies of 8,000 Hz, most people over the age of 40 canât hear 15,000 Hz. Note that YouTube has compressed this video so, unfortunately the 19,000 Hz frequency has been lost. But that doesnât matter to me because I didnât come anywhere close to being able to hear it. Sigh. Go and watch the video above to find out how young (or old) your ears really are and prepare to be depressed.
Sudden hearing loss, the rapid loss of 30 decibels or more of hearing ability, can happen over several hours or up to 3 days. (A normal conversation is 60 decibels.) Sudden hearing loss usually affects only one ear. Although there are up to 3 new cases per every 10,000 people each year, doctors are not able to discover the cause in most cases. Illnesses such as heart disease, high blood pressure, and diabetes put ears at risk by interfering with the ears' blood supply.