Atom,molecule,cell,tissue,organism,population,ecosystem,biosphere.
Answer:
If there are no animal cells, then life on earth would not exist. Also plants would dominate.
Explanation:
Answer:
Yes, it can hurt one depending on the species, such as land animals having to be in the water for too long, it may drown, but it takes a certain amount of time to do so which means that for the most part, it is harmless.
Hope this helps!
Answer:
im pretty sure its breathing
Explanation: