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There are three layers: ectoderm, mesoderm, and endoderm.
Millions. There isn't a specific answer to this question. Scientists can't answer that question because there are so many animals in the world that people lost count. Reptiles, Amphibians, and MANY underwater animals ARE COLD BLOODED
'Toads' comprise a huge number of amphibian species that have dry skin, often spend more time on land, and are in the order Anura (tail-less amphibians). A toad is a general name for many many different animals. If you live in the USA or Canada the word Toad often means the common, American toad, Bufo americanus.
There are approximately 900,000 arthropod species within the animal kingdom (insects and spiders), 100,000 species of roundworms and mollusks, and fewer than 50,000 species of vertebrates (20,000 fish, 8,700 birds, 6,000 reptiles, 2,500 amphibians, and 4,500 mammals). In total, that makes approximately 1,050,000 species within the animal kingdom.
There are approximately 65,000 species in the Chordata phylum, which includes vertebrates like mammals, birds, reptiles, amphibians, and fish, as well as some invertebrate species like tunicates and lancelets.
how many tissue layers do the phylum arthropoda have
There are three layers of embryonic tissue present in the pig. These layers are called the ectoderm, mesoderm and the endoderm.
Three
There are three layers: ectoderm, mesoderm, and endoderm.
There are three layers: ectoderm, mesoderm, and endoderm.
two layers but so have three
3
three
Do you mean how many species, because I don't think anyone can organize a census to ask all the adult amphibians how many children they have.
Skin consists of three layers of tissue.
Four layers of tissue form the walls of the digestive tract. These layers are called mucosa, submucosa, muscularis externa and adventitia.
There is only a single layer of cells in onion tissue. However, sometimes the tissue can fold over itself and appear to have two layers.