chemicals in common use today....).Chemists use chemical reactions to make plastics, medicines, dyes (染料) and many other materials ……

酮), is known to be the most common cause of allergies (过敏). The safety of another three chemicals.... But is sunscreen safe?According to the US Food and Drug Administration, the chemicals in sunscreen can seep ……

with chemicals of octopus skin and fish skin. They found that the octopus’ arms again didn’t touch the skin. Their grasp (抓取) on the food with chemicals of octopus skin was 20 times weaker than ……

WITH a new semester starting, lots of students are rushing to buy new stationery (文具). It’s common... essences (香精). They contain harmful chemicals that could lead to chronic (慢性的) poisoning in the long ……

urbanization (城市化), unsafe use of chemicals and access to weapons (武器). If we don’t take action, millions...IT has become common sense that bad environments do harm to human beings and that’s why we need ……

Scientists use soil-based “ink” to print material that can replace concrete. TEXAS A&M UNIVERSITYScientists use soil-based “ink” to print material that can replace ……

你知道吗,水果蔬菜的鲜艳色彩对我们的身体也是有好处的。词数 253 建议阅读时间 4分钟PLANTS and animals often use color to draw attention... themselves from the sun'sultraviolet (UV) light(紫外线).Ultraviolet light causes bad chemicals to form ……

strawberries, green peas, orange carrots?Plants and animals often use color to drawattention(注意力). Deep, rich... (UV) light(紫外线).Ultraviolet light causes bad chemicals toform(形成) within plantcells(细胞). If those ……

. Whether their use is intentional or not, many of these chemicals are ending up in the human...Harmful chemicals in food packaging can cause illness. VCGHarmful chemicals in food packaging can ……

The natural way to look after your cropsBRITISH salad producers are beginning to use ladybugs (瓢虫... and vegetables without the need for chemicals. A spokesman from South Downs Nurseries in the UK said: “With most ……

on them. But they do have certain advantages. For starters, farmers don’t use harmful chemicals... harmful chemicals, they need more care to stay healthy. Organically grown foods also have more nutrients ……

on them. But they do have certain advantages. For starters, farmers don’t use harmful chemicals... harmful chemicals, they need more care to stay healthy. Organically grown foods also have more nutrients ……

some debate.Some people are concerned that large-scale seeding through the use of chemicals might cause... and at the ready."There's a 30 per cent chance we could use them tonight," Li remarked, finger at the ready ……

computer chips today use plastic as their base. They make 50 million tons of e-waste (电子垃圾) each... today use plastic as their base. They make 50 million tons of e-waste (电子垃圾) each year, studies ……

University in Queensland, Australia, algae (海藻) is slowly killing the corals (珊瑚) through chemicals... the algae to produce stronger chemicals, and some species of algae produce even more of these harmful ……