In what ways are mosses liverworts in the hornworts words similar

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

Select the correct answer from each drop-down menu proteins are

Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.