Which of the following statements is consistent with the assertion that protists are paraphyletic? a. protists do not constitute all of the descendents of the first eukaryote. b. protists all share a common set of synapomorphies. c. protists are all more primitive than land plants and animals. d. protists do not share a single common ancestor. e. all of the above answers apply.

cuz he's blad

explanation:

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.