K Potassium Na Sodium most
Ca Calcium reactive
Mg Magnesium
Al Aluminium
Zn Zinc
Fe Iron
n Tin
Pb Lead
Cu Copper
Ag Silver
least
Au Gold
reactive
Pt Platinum
Which metal would most likely replace lead in a solution?
potassium
copper
silver
gold

Plsss > .< compare and contrast the characteristics of flatworms rounds worms and earthworms

What controls activities within a eukaryotic cell?

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.