*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

The following image is of a diatom. it lives in water and gets food from photosynthesis. it is encased in a hard shell made of something similar to glass or sand . a diatom is a(n) because it has a) multi-celled organism; specialized parts. b) vertebrate; a skeleton. c) insect; an exoskeleton. d) single-called organism; only one cell.

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.

Will mark branliest. the theory of plate tectonics was developed with the contribution of scientists from many different disciplines. which of the following is a contribution from geophysicists?