What type of compound is made up of atoms held together by covalent bonds?

Which strategy is an example of how companies may upgrade themselves to meet changing customer preferences? a. doing door-to-door sellingb. using billboards to advertise the productsc. making online shopping services availabled. giving discounts on products

Ineed some everybody. the production of cells during mitosis into specialized function is called: recombination or differentiation

The transport tubes from food came down the plant are called?