Your question is rather unclear but from what I can tell either there were not an even amount of Petri dishes or some of them were left open while others were not.
Answer:
Prokaryotic single-celled organisms.
Explanation:
even though many debate on this. the earliest forms of like pretty much began with bacteria. During the Precambrian Timespan most life was composed of these single celled organisms.
Answer:
1. B
2. C
(check with your teacher to make sure and explain it to you)
Water is not a living thing because it is not made up of a living atomic structure, water is instead made up of 2 hydrogen atoms and 1 oxygen atom unlike other living creatures.
Hope this helps!=)
All plants and animals are made of cells
