What elements does a valid contract contain under the common law?

What elements does a valid contract contain under the common law? what elements do you consider when looking for a job? SCIENCE QUESTIONS （会做的要帮忙!1、what family or group are the halogens in name all elements in the halogen family.2/what effect does silver nitrate solution have upon each of the halide salt solutions does a chemical reaction occur for eac what does a monkey like what are the basic elements in a play?want english answer.thx 1；name the two chemical elements that make up of Earth's atmosphere.2:in which layer of the atmosphere do people live?3:what is atmospheric pressure?4:what does a barometer measure?5:what term is used for the amount of water vapour carried in air?6 What social and cultural elementes should be taken into consideration?The company will open a branch in the west part of china ,say,in xinjiang or Tibet.hints:religious elements,climeta,geographic elements ,econmic elements. what are the main elements of humanism? 英语翻译2.2 Does the facility have written emergency response plans in the event of a release of a chemiical or material which would pose a hazard to the environment?0 Yes 0 No 2.2.1 If “Yes,” please indicate what elements the plan includes a what does A.k.a mean? what does a beetle eat?how long does it live? What does a cat like to do What does a teacher do every day? what does take a shit mean? What does a white lie mean? What does'a cold welcome 'refer What does A like,tea or coffee? what does lose a tooth mean?