Which discovery is attributed to Phoebus Levene? A. extraction and observation of DNA B. identification of ribose and deoxyribose C. recognition of RNA as DNA's messenger D. construction of an accurate DNA model

True or False? Uranium used for nuclear power is a renewable resource because it takes a small amount of material to produce a great deal of energy. * true or false

Scientist think that all of life on earth originated from which type of organisms? A. single-cell prokaryotes B. single-cell eukaryotes C. multicell animals D. stromatolites

What happens to the temperature of gasses as they reach the top of the suns convection zone

How do the three different types of neurons function

What happens during each of the phase?

Arid and semiarid lands are prone to desertification because c. The precipitation cannot meet the growing demand for water or d. 10 per event of productivity is lost to erosion.

A 45-year-old male client with a confirmed DVT is being discharged from the ED. Which of the following client statements indicates that the client has received proper nursing instruction and understands how to manage his condition?

Which of the following are made of repeating sugar units? Choose all answers that are correct. A. nucleic acids B. carbohydrates C. proteins D. lipids

Identify four organelles that should be present in the eukaryotic organism and describe the function of each organelle.

Animals respond to threats in their environme the result, mostly, of interactions OD 3 C A. the circulatory system and the reproductive syste O B. blood circulation and hormone production the nervell system and the muscular D. respiratory rate