Vertebrates share many physical characteristics. all vertebrates a. have an internal skeleton that includes a backbone or spinal column. b. have a thick exoskeleton but not an internal skeleton c. have neither an exoskeleton nor an internal skeleton. d. have an internal skeleton but not a backbone or spinal column.

Which mantle is under the crust the upper mantle or the lower mantle i think it's upper let me know if i'm right

The table lists the observations students made about four specimens under a microscope. based on these observations, what specimens did the students examine? animal plant virus prokaryote cell membrane present ribosomes present lysosomes present nuclear membrane present cell wall present ribosomes present nuclear membrane absent cell wall present ribosomes present nucleus present large vacuole present reproduces inside of a cell nucleus absent rna present 2019 edmentum all rights reserved intl

Yeast cells reproduce quickly by budding. this is a form of reproduction so all the yeast cells a) sexual; vary b) asexual; vary c) asexual; are identical d) sexual; differ from the parents submit hint structures and functions of cells cellular reproduction