Question

Can I have some thanks I'll also thank,What is aerogel ​

Answer 1

Answer:

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i.  Animals which do not have a vertebral column or a notochord are called Invertebrates.

ii. Dinosaurs, Snakes, crocodiles are some reptiles to be found in the Mesozoic era.

iii.Pisces group refers to aquatic animals.

iv.The remnants are called as fossils.

v.

Vertebrates are said to be evolved from the Invertebrates in the course of evolution and thus oldest

fossils to be found before vertebrates are of invertebrates, in the deepest layer.

Answer 2

Explanation:

a solid material of extremely low density, produced by removing the liquid component from a conventional gel.