The buzzing sound produced by bees or mosquitoes is due to:Options:Voice from their vocal chordsVibration of air from their lungsFlapping of their wings in the airSound from their mouth

What is the reason of dry buzzing (humming) rales?Ответы(один ответ)1  E) Viscous bronchial secret in fine bronchi and (or) their spasm.2  A) Small amount of exsudate or transudate in alveoluses3  С) Alveoluses are completely filled by exsudate or transudate4  B) Inflammation of pleura leaves («dry» pleurisy)5  D) Viscous bronchial secret in large bronchi

Have you ever watched a hummingbird sipping from a flower? These amazing little creatures are the only birds that can fly in every direction. They can also hover in one spot, much like a helicopter. Their wings can flap up to 80 times per second! Hummingbirds are so tiny you may think that they are large insects as they flap through the air. Some scientists believe that hummingbirds are a bridge between the insect and bird worlds. They have observed that hummingbirds flap their wings more like insects than birds. But don't think, just because they are tiny, that hummingbirds are weak. Hummingbird fossils from tens of millions of years ago have been discovered. Somehow these amazing thumb-sized marvels have survived a long, long time.From the text above, what can you conclude about Hummingbird. Choose the correct informationHummingbirds can stay in one place just like helicopters.  blankHummingbirds are family of insects because they can flap their wings. blankHummingbirds are the only birds that can fly in every direction. blankScientists have discovered a hummingbird thumb that is tens of millions of years old. blank     Χ           √

How do honey bees communicate with each other regarding the location of food? (a) By dancing (b) By making sounds (c) By singing (d) None of these

Butter flies and mosquitoes have afeeding tube in place of the mouth. Thistube is called proboscis. It works like astraw. A butterfly uses the proboscisto suck liquids like nectar fromflowers. A mosquito uses it to suckbl

How do butterfly and mosquito have their food?