Body cells on surface are covered with keratin like materials. Those layers protects the cells
Bacteria
The motility of a microorganism can be observed. Motile organisms, using the flagellum, will move away from the stab line, hence will appear to have "diffused" into the medium. Non-motile organisms will remain in the stab line.
the plantlike organisms are using up all the oxygen, killing the fish
Charles Darwin observed that the beaks of several finches on the Galapagos Islands were adapted to specific purposes, and that, while they were all finches, they had adapted different characteristics to perform different functions (different feeding for differently shaped beaks). This led him to conclude that organisms can and do change to perform necessary tasks more conveniently. He expounded upon this conclusion, eventually publishing his renowned On the Origin of Species.
The varities of organisms observed by Darwin on the Galapagos Islands as Darwin realized these creatures all came from the South American mainland and were quite variant from Island to Island as to size, coloration and the different ways the organisms made their living.
Experiment
Galapagos Islands are the islands where Charles Darwin observed variation among organisms.
its not, it is observed differently by all observers.
Trials or experiments.
microscope
there are microbes, bacteria and fungi
Our eyes seeing them 🙄
Bacteria
Anton Van Leeuwenhoek.
No , False
they have never been observed but there is evidence that there once was volcanoes mercuries core has cooled bringing volcanic activity to an end.
Size (of the enemy unit)