Some of the chemicals that you have been talking about are down right dangerous for someone at your level (in the concentrations you are getting). There is nothing wrong with enthusiasm, but you must go slow and learn first; this is not a comment against you, chemistry is a hard subject ...
Dangerous goods, abbreviated DG, are substances that when transported are a risk to health, safety, property or the environment. Certain dangerous goods that pose risks even when not being transported are known as hazardous materials. Hazardous materials are often subject to chemical regulations. Wha...
A chemical isany substance that has a defined composition. In other words, a chemical is always made up of the same "stuff." Some chemicals occur in nature, such as water. Other chemicals are manufactured, such as chlorine (used for bleaching fabrics or in swimming pools). What is the c...
32 andconceptsareusedwhenIdesignnewcoasters.Butthey 33 withtheterrain(地势)anddesign.Thattellsuswhatthelimitswillbe—howtight thebendsandhow 34 thehillsare.” Someparks 35 theircoasterstobeasscaryas possible.Thatmeansbig 36 andquickturnsand lotsofinversions.Lehrneris 37 atmakingtwisted woodcoasters.The...
Donotthrowchemicals,oils,paintsormedicinesdownthetoilet.Inmanycities,yourlocal environmentofficecanhelpwiththedisposal(清除)ofmedicinesandchemicals.Andyoushould buymoreenvironmentally-safecleaningliquidsforuseathomeandotherpublicplaces.Theyare lessdangeroustotheenvironment. 3 Ifyouliveclosetoawaterbody,trytoplanttree...
Can something be dangerous for one person but not another? Yes, depending on individual vulnerabilities, something might be dangerous for one person but not for another. 3 Are all dangers obvious? No, some dangers may not be immediately obvious and can be hidden or unexpected. 2 How do peopl...
To put it more explicitly, if the United States continues to see China as an enduring rival that it must out-compete in order to maintain its global hegemony, it will be very dangerous for both sides and the world as a whole. Lessons from history must be learned because such Cold War ...
Hilary Brueck
Some factories let waste water run into the sea. Sometimes dangerous chemicals are washed overboard from ships. People are now trying to save the oceans from pollution. The sea is the home of many animals which depend on each other for food. If one dies others are in danger. Many sea ...
Shipping delays:Dangerous goods shipments often require cargo-only flights, which are less frequent than regular flights. Additionally, they may undergo more stringent security and customs inspections. Additional costs:Shipping dangerous goods may incur surcharges due to the specialised handling and docume...