HEL PLEAS A student is building a model showing how living things are organized. Which pair of groups contains the greatest number of organisms?

genus and species

phylum and class

domain and genus

domain and kingdom

Patient has just received an organ transplant which treatment would be most effective in preventing the patient’s body from

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs

Ihave no idea how to solve these. plus there's another question that is 2) a 10 kilogram meteorite is collected in space and brought back to earth. it is composed of 1.25 kg of uranium-238 and 8.75 kg of lead-206. how many u-238 half lives have passed? what is the approximate age of the meteorite?