Number of Species on Earth

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It is estimated that there are around 8.7 million species on Earth, although this number is constantly changing as new species are discovered and others become extinct. However, it is important to note that this estimate is based on current knowledge and research, and there are likely many more species yet to be discovered.

Microorganisms like bacteria and archaea make up the vast bulk of species on Earth.

These tiny organisms make up the majority of the biomass on Earth and play crucial roles in many ecosystem processes. In addition, there are millions of species of insects, which also make up a large portion of the world's biodiversity.

Plants and animals are also diverse, with around 400,000 species of plants and over 1 million species of animals currently known. These include everything from towering redwoods and delicate orchids to majestic elephants and tiny hummingbirds.

Marine organisms are also incredibly diverse, with an estimated 1 million species of fish, crustaceans, and other aquatic animals. Coral reefs, in particular, are known for their high levels of biodiversity, with thousands of different species of fish, invertebrates, and other organisms living in these ecosystems.

However, despite the staggering diversity of life on Earth, many species are currently at risk of extinction due to human activities such as habitat destruction, pollution, and over-exploitation of natural resources. We must work to protect and conserve these species and their habitats to ensure that the world's biodiversity is not lost forever.

It's worth mentioning that the number of species on Earth is constantly changing as scientists continue to discover new species and reclassify existing ones. It's hard to know the exact number, but it's estimated that there are around 8.7 million species on Earth, with more than 1.3 million of them being animals. This number will continue to change as scientists discover new species, reclassify existing ones, and others become extinct.