MATH
highlighted numbers below into exponential/ scientific notation.
This is by far the largest group in the animal kingdom: 97 percent of all animals are invertebrates. So far, 1.25 million species have been described, most of which are insects, and there are millions more to be discovered. The total number of invertebrate species could be 5, 10, or even 30 million, compared to just 60,000 vertebrates.
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Answer:
phylum Arthropoda
The phylum Arthropoda is the largest phylum or group of animals in the Kingdom Animalia.
In terms of numbers of species, insects certainly represent the largest percentage of the world's organisms. There are more than 1 million species of insects that have been documented and studied by scientists.