Plastic is put into molds to create specific shapes. in what state of matter should the plastic be when it is put in the mold, and why?

Which term refers to the total dollar value of the goods and services produced in a country in a year?

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

This part insulates the reaction chamber from the transfer of heat to or from the surrounding environment