Hardwood comes from deciduous trees which lose their leaves every year. softwood comes from conifer trees which usually remain evergreen
Answer:
The kinetic molecular theory explains the expansion of a solid material with increases of temperature as basically the result of <u>molecules moving a little farther apart.</u>
Explanation:
The kinetic-molecular theory explains the changes of state in the following way: When a solid is heated, its particles increase their kinetic energy, so that the vibration becomes more and more intense until, having reached the melting temperature, they become so weak that the particles acquire freedom of movement, that is, if we increase the temperature of a solid material system, its molecules will move faster and the average distance between them will increase, the cohesion forces decrease and there will come a time when these forces are incapable to keep the molecules in fixed positions, the molecules can move.
Two key factors are involved in people accepting the drinking of tap water that comes from the treated wastewater:
1. Economic strength of the country: The country that has the wealth to develop and use technologies that can treat and purify the wastewater to make it available for drinking will make it possible for the people to accept it. The country may subsidise this kind of water to increase its use and popularity among its citizens.
2. Social acceptance: People should understand that they are drinking pure water and not wastewater. The change in mentality of people will promote its consumption.
A neuron transmits information in the form of electrochemical changes, otherwise known as nervous impulses, through neurotransmitters. Hope it helps!
