What distinct difference did 19th century scientists notice between plant and animal cells?

cell walls, vacuoles, chloroplasts, centriole

Explanation:

Plant cells have cell walls, one large vacuole per cell, and chloroplasts, while animal cells will have a cell membrane only and several smaller vacuoles. Animal cells also have a centriole, which is not found in most plant cells.

d) center of the mid-ocean ridge

give brainleysest

sinserly,

steckh986

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.