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Answer .
What are invertebrates?
invertebrate, any animal that lacks a vertebral column, or backbone, in contrast to the cartilaginous or bony vertebrates.
Describe the major groups of invertebrates.
The Invertebrates unit explores six groups of invertebrates— poriferans (sponges), cnidarians (such as sea jellies and corals), echinoderms (such as sea urchins and sea stars), mollusks (such as octopuses, snails, and clams), annelids (worms), and arthropods (such as insects, spiders, and lobsters). (maybe)
What is ecosystem? And what are the example of diverse ecosystem?
An ecosystem is a geographic area where the plants,animals and other organisms,as well as weather and landscape,work together to form a bubble of life. Forests,desert, grasslands and streams are the examples of diverse ecosystem.
Explanation:
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