The definition is:genetics definition<span>. The study of heredity, or how the characteristics of living things are transmitted from one generation to the next. Every living thing contains the </span>genetic material<span> that makes up DNA molecules. This</span>material<span> is passed on when organisms reproduce.</span>
Answer is Middle Paleozoic era.
Paleozoic era was in 542 Ma - 245 Ma and it has 6 periods as Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian.
360-280 Ma - forming of vascular plants with woody tissues, seeds and veins.
430 - 410 Ma - forming of jawed fishes and first amphibians.
420 Ma - forming of scorpions
360 Ma - forming of crustaceans.
They are called
a. sunspots
As both fill with liquid they expand. They are also both rounded shapes
