Question

The exoskeleton of animals belonging to class Aves is in the form of


plzz answer this question and don't give spam answer and it's very urgent ​

Answer 1

Answer:

Birds do not have exoskeletons, because they are vertebrates. This means they have a backbone and an internal skeleton for protection and support..

Explanation:

Hope u understand ur question is partialy wrong

Answer 2

Explanation:

Liquids will often have lower surface energies than solids (due to the weak forces interacting between molecules), which is why liquids usually spread out. Surface energy can be defined as the energy required per unit area to increase the size of the surface, and as such is often quoted in units of mN