Which macromolecule has a sugar-phosphate backbone?

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

The idea of spontaneous generation was disproved by in a experiment involving jars of meat

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.