Yuri is working with a chemical in lab. This chemical is composed of three phosphate groups, adenine base, and a sugar known as ribose. He is working with:.

If you measure your shoe size would it be considered qualitative data?

Give an example of the type and scale of economic activity for a traditional economy.

In the image, layer a is the topmost layer. layer c contains fossils from the precambrian era. layer b contains dinosaur fossils, and layer a contains fossils of mammals. which two statements are supported by this evidence? 1. mammals lived before the precambrian era. 2. dinosaurs and mammals existed in the precambrian era. 3. dinosaurs evolved after precambrian organisms. 4. precambrian organisms evolved after dinosaurs. 5. precambrian organisms were the first life-forms to become fossilized, according to this sample.