Question

evolution of animals​

Answer 1

Answer:

||||. EVOLUTION OF ANIMALS .||||

For many people animals are perhaps the most familiar, and most interesting, of living things. This may be because we are animals ourselves. As such, we have a number of features in common with all the organisms placed in the animal kingdom, and these common features indicate that we have a shared evolutionary history.

All animals and plants are classified as multicellular eukaryotes: their bodies are made up of large numbers of cells, and microscopic inspection of these cells reveals that they contain a nucleus and a number of other organelles. Compared to prokaryotic organisms such as bacteria, plants and animals have a relatively recent evolutionary origin. DNA evidence suggests that the first eukaryotes evolved from prokaryotes, between 2500 and 1000 million years ago. That is, eukaryotes as a taxon date from the Proterozoic Era, the final Era of the Precambrian. Fossils of both simple unicellular and more complex multicellular organisms are found in abundance in rocks from this period of time. In fact, the name "Proterozoic" means "early life".

Explanation:

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Answer 2

Answer:

Genetic data suggest that multicellular animals evolved around 1000 million years ago., this is supported by fossils embroys from roacks in China that date back 600 million years ....... Previously scientists believed that animal did not begin to colonise the land until the silurian (440-410 millions years ago).