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guapka [62]
3 years ago
11

How long ago did invertebrates become common on Earth? 1.6 million years ago 132 million years ago 410 million years ago 520 mil

lion years ago
Biology
2 answers:
Alja [10]3 years ago
3 0

520 million years ago

statuscvo [17]3 years ago
3 0

The correct answer is option D, 520 Million Years Ago

Reason -

The first invertebrates occurred in the oceans in the form of soft body animals which are covered by shell. These organisms appeared in the water bodies some 5 billion years ago (500 million years ago). The other species include the arthopods (insects), mollusk(snails and octopus) , annelids (Earthworm and leeches) etc. also evolved some 490 million years ago.

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The theory that Francesco redi sought to disprove by his experiments was the theory of spontaneous generation.

<h3>What is the theory of spontaneous generation?</h3>

The theory of spontaneous generation is the theory that living-things can arise spontaneously from non-living things.

Early scientists believed this theory. The experiments by Francesco Redi sought to disprove this theory.

However, it was only the experiment by Louis Pasteur that finally helped scientists at the time to reject the theory of spontaneous generation.

In conclusion, the experiments by Franceso redi was aimed at disproving the theory of spontaneous generation.

Learn more about spontaneous generation at: brainly.com/question/12682659

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