What was the investigation? But from my best guess I'm assuming it's the second option. This may be incorrect.
Answer:
The evolution of the heart is based on the separation of oxygenated blood from deoxygenated blood for efficient oxygen transport. pisces have a dual chambered heartwhile reptiles and amphibians are having a three chambered finally aves and mammals have four chambered hearts.
Explanation:
please mark as brilliant answer
Answer:
melting from ice cube to water
Explanation:
this is because the object gains heat and melting occurs in the object
Nervous tissue. Hope this helps!
Plants are in the ground with soil
