The article presents University of Tulsa biology professor Estelle Levetin's explanation of factors contributing to annual variations in seasonal allergies among Americans include the effect of weather on the allergy season's length and strength, the effect of rain, and the impact of global warming....
What are allergies and why do we experience symptoms only during specific periods of the year?Immune System:The human immune system is composed of cells called the leucocytes that act as guards and keep a check on the foreign substances or objects that enter the body....
Vliagoftis says scientists already know that many people can be sensitized to allergens such as pollen, and have the ability to develop allergies, but regardless of the age where full-blown allergies develop, there is usually some kind of trigger. It is that ...
Polluted air and steadily rising temperatures are linked to health effects ranging from increased heart attacks and strokes to the spread of infectious diseases and psychological trauma.
Millions of people have allergies, but many ignore how this affects their eyes. Exposure to pollen, pet dander, mites, and fumes can cause your eyes to turn red, itchy, and watery. For relief, try over-the-counter medications like eye drops and antihistamines. If they don’t help, you ...
C. Because they do not have enough energy to produce new leaves and pollen at the same time D. In order to take advantage of the windiest time of year 你的答案: 正确答案:B 题目解析: 登录 后才能查看题目解析,还没有账号? 马上注册 推荐文章: 【托福阅读】Official 47-P3 珊瑚礁 【托...
To avoid competing with evergreen conifers, which flower in the fall or winter B. So that the leaves of the trees receiving the pollen will not prevent the pollen from reaching the trees’ stigmas C. Because they do not have enough energy to produce new leaves and pollen at the same ti...
"We have this exposure to pollen grains, to these proteins, and our immune system is reacting for a longer period of time throughout the year," she said. Using data from the Pacific Climate Impacts Consortium, the Climate Atlas develops interactive climate change pr...
Why do we think chronic inflammation can cause cancer? What makes scientists believe that inflammation causes cancer? Why do we develop allergies to repeated exposure? How can some people lose an allergy? Why is skin cancer more prevalent today than it was 10 years ago?
NEW YORK — Are your seasonal allergies sticking around longer than usual? It's not just you, and experts say a warming world may be part of the reason why. Seasonal allergy sufferers have a lot of company; according to the Centers for Disease Control and Prevention, about 25.7% of ...