Ascientist is studying a unicellular organism. the organism normally looks like image a. then the scientist places the cell in two different solutions. in the first solution, the cell changes to look like image b. in the second solution, it changes to look like image c.
which statement describes the solution and process that would cause a cell to look like the cell labeled b?
a.
too much sugar water moved out of the cell.
b.
too much water moved into the cell.
c.
too much saline moved into the cell.
d.
too much water moved out of the cell.

the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.