How does the amount of precipitation affect the tundra and tropical rain forest species

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi

During an experiment, readings for blood pressure in a persons body were found to be constant . however , when he measured by a different blood pressure cuff , the readings differed by 15 points for each reading. this difference indicates that the results are

Compare the shapes of the bones of the human skull with the shapes of the bones of the human leg. how do the shapes differ? why are the shapes important?