The article focuses on the mission of the University of California, Berkeley Center for Green Chemistry to teach a new generation of students about the safety of toxic chemicals that make up the people's lives. It emphasizes the goal of the center to share the best available science on ...
第三段末句“This is a part of the Green Chemistry philosophy.(这就是绿色化学哲学的一部分。)”提出了“绿色化学”,接下来第四段第一句“Green Chemistry is a way of rethinking how to develop products and processes that are more environmentally-friendly and better for people's health.( 绿色化学...
Thechemicalsthat make swimming pool water safe can have unpleasant side effects (副作用). They need ___ at least once a week. A.check B.checked C.checking D.to check 免费查看参考答案及解析 题目: Everyone believes that thosechemicalsdo ___ to the environment.(harmful) 免费查看参考答案...
Water pollution is when waste, chemicals(化学品), or other things cause a body of water to become harmful to the fish and animals that need the water to live on. 1 A lot of water pollution comes from human activities. Some human causes include pesticides(杀虫剂) and fertilizers(化肥) fro...
What Chemicals make up DNA? When analyzing DNA it is important to understand it and all the chemicals that it is made of. The first thing that’s important to know is simply what DNA stands for, which is deoxyribonucleic acid. The chemical units are called nucleotides, and each nucleotide ...
” The US Food and Drug Administration (FDA) adds thata cosmetic could bedeodorant, perfumes, lotions, nail polish, shampoos and other hair products, as well as eye, lip, and face makeup. These definitions are important as they dictate which types of products are federally regulated, and ...
Population density is a major factor that influences bacterial growth and response. In general, a stimulus from the surrounding environment usually leads to a highly-coordinated response among all the bacterial cells within the entire population that restricts the expression of certain genes/clusters of...
“I was just looking up all the new cloud classifications that were added. They all seem to be visible just before a major ‘event’. Just connecting the dots…” “I live in Florida and I saw this too. Usually when there is spraying in the skies, the weather drastically changes the ...
aEnglish was invented by people, not computers, and it reflects the creativity of the human race, which, of course, is not a race at all. That is why, when the stars are out, they are visible, but when the lights are out, they are invisible.[translate] ...
a填空 Everything at the party ___ the thoughtfulness of the hostess. Fills up Everything at the party ___ the thoughtfulness of the hostess.[translate] aIf you were a tear in my eyes that I never cried because I was afraid of losing you 如果您是一滴泪花在我的眼睛我未曾哭泣,因为我害...