brain central nervous system human being nerve tissue neurons Organize the parts of this body system in the CORRECT order according to the levels of organization in a multicellular organism, simplest to most complex. A) human being - central nervous system - brain - nerve tissue - neurons B) brain - neurons - nerve tissue - central nervous system - human being C) neurons - nerve tissue - brain - central nervous system - human being D) nerve tissue - neurons - brain - central nervous system - human being

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

there is not 1 highest source of protein, but there are many; meats, fish, poultry, seafood, cheese, eggs, yogurt and milk. the only non complete animal food that is beneficial is gelatin.

sorry if this did not , have a great day!

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.

a bird that nests only in a particular tree species.