Complete this table to learn how the surface-area-to-volume ratio changes as size increases. Hypothetical Cube-shaped
Cells
A
Surface area
(total area of all six sides)
Volume
Surface-area-to-
volume ratio
um?
um
Length of each side = 1 um
B
um?
um
Length of each side = 10 um

b. the carbon cycle ensures living things have a source of hydrogen

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.