Answer:
A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds.
Answer:
There are not too many disadvantages of endoskeleton .
This is why most large animal around have them.
one large animal has one of the vunerability animals face without exoskeleton.
Explanation:
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Answer:
C
Explanation:
If you have more than one variable then you wont know which variable caused the change. Hope this helped, if it did give it a thanks or whatever.
Answer:
by looking at their physical features, the fossil record, and dna sequences
