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When did the phylum platyhelminthes appear on earth?
The phylum Platyhelminthes is believed to have appeared on Earth during the Ediacaran period, around 550 million years ago. They are one of the earliest known groups of multicellular organisms.
Which animal classification has the most number of animals?
The animal classification with the most number of species is the insects, within the class Insecta. Insects make up approximately 75% of all animal species on Earth.
How many levels does the animal classification system have?
The animal classification system has seven levels, which are kingdom, phylum, class, order, family, genus, and species. These levels help to categorize and organize the diverse range of animal species on Earth based on their characteristics and evolutionary relationships.
Which animal phylum is the majority of the animal kingdom?
The majority of the animal kingdom belongs to the phylum Arthropoda, which includes insects, arachnids, crustaceans, and other invertebrates with jointed legs and tough exoskeletons. Arthropods are incredibly diverse and can be found in nearly all habitats on Earth.
How many types of animals are there in the animal kingdom?
There are 800 000 identified species, most of which are insects and invertebrates. However, many new species are continually being discovered, and taking into account the huge areas still unexplored on Earth (eg forests in South America, small islands, and most oceans), the true number of animal species on earth is probably far larger.
How did reptiles appear on earth?
They evolved from amphibians during the Carboniferous Period.
Earth's first vertebrates appeared during this period?
No, the first vertebrates evolved long before the Mesozoic. The first vertebrates, small jawless fish, evolved around 520 million years ago. Land animals had even evolved long before the Mesozoic Era.
What was the first animal to walk on the earth?
The first animal to walk on Earth was likely a type of primitive fish that developed four limbs and moved onto land around 360 million years ago during the Devonian period. These early tetrapods eventually evolved into the diverse array of land-dwelling animals we see today.
What was the second animal to appear on earth?
As far as humans know, the first human being was god, who created Adam and eve. Adam and Eve had 2 kids. Since Adam and eve were created and not technically born and they were created at the same time, their children were evidently the 1st and 2nd people on earth.
Why is the blue whale the largest animal on earth?
Simply put, whales evolved to be huge, and the blue is the largest whale.
Were the any major events in the precambrain period?
During the Precambrian period, Earth's atmosphere and oceans were forming, and the first simple life forms like single-celled organisms appeared. There were no major events like the complex life forms and multicellular organisms evolved later during the Paleozoic era.
Did humans live during the time of Pangaea?
No. Pangaea is thought to have broken up about 240 million years ago during the Triassic Period, while early man only evolved during the last few million years.
What kind of mammals were on earth during dinosaur ages?
During the end of the Triassic period, the first mammals evolved from therapsids, or mammal like reptiles. Some of these mammals were the Purgatorius, a tiny rodent like creature, and the Castorocauda, which had beaver like characteristics.
What appeared near the beginning of the Cretaceous period?
The most notable group of organisms that evolved at the beginning of the Cretaceous are the flowering plants, or angiosperms. Today, these are the majority of plants on Earth. All fruit bearing plants and grasses are angiosperms. At the same time as these evolved, new insects evolved that pollinated the flowers. Additionally, birds evolved either during the late Jurassic or the early Cretaceous.
What happened to earths continents during Permian period?
What happened to the earth's continents during permian period is pangea
Why did they create tigers?
Who are they and what grotesque lab are they working in? Tigers weren't created. They evolved like Avery other animal on earth.
What happened to the earth's continents during the Permian period?
What happened to the earth's continents during Permian Period is Pangea, Pangea is when the used to be one big super continent broke apart created our separate continents today.
