Everyone loves fall weather, right? Well those of us with fall allergies have a different opinion. The culprit: ragweed. But what is it? And why does it make your eyes and nose itch so much? Seasonal Science explains ...
For additional education materials, please visit us at PBS Learning Media: [ Ссылка ]
Produced for UNC-TV by Melissa Salpietra
UNC-TV Digital Media Director: David Huppert
Science Advisor: Bill Johnson, Purdue University
Images:
Patrick J. Alexander, hosted by the USDA-NRCS PLANTS Database
USDA-NRCS PLANTS Database / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service.
Sounds provided by freesound:
Highway Traffic_1-2.aif by SteveMannella -- [ Ссылка ]... Mouth Wind Howling.wav by gelo_papas -- [ Ссылка ]_... ArrowHit02.mp3 by Yap_Audio_Production -- [ Ссылка ]... Playing with gravel and dry leaves and sand.wav by bevangoldswain -- [ Ссылка ]... Bubble Popping Noise - 30 sec.wav by joshenanigans -- [ Ссылка ]... ClearingThroat1.wav by K1m218 -- [ Ссылка ]; Sneeze by Dshogan -- [ Ссылка ]; Sneeze.mp3 by sjnewton -- [ Ссылка ]... Car Horn.wav by ceberation -- [ Ссылка ]... Whoosh_3.wav by speedygonzo -- [ Ссылка ]... Rubber stamps.wav by Robinhood76 -- [ Ссылка ]... Slide_whistle.wav by plingativator -- [ Ссылка ]...
![](https://s2.save4k.ru/pic/_XGCHDpcHXA/maxresdefault.jpg)