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The earliest animals were marine invertebrates, that is, vertebrates came later. Animals are multicellular eukaryotes, [note 1] and are distinguished from plants, algae, and fungi by lacking cell walls. [1]
Lots of Silurian and Devonian scorpions were previously thought to be gill-breathing, hence the idea that scorpions were primitively aquatic and evolved air-breathing book lungs later on. [107] However subsequent studies reveal most of them lacking reliable evidence for an aquatic lifestyle, [ 108 ] while exceptional aquatic taxa (e.g ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 13 December 2024. Self propulsion of a person through water This article is about standard human swimming. For competitive swimming, see Swimming (sport). For animal swimming, see Aquatic locomotion. For other uses, see Swimming (disambiguation) and Swimmer (disambiguation). A competitive swimmer ...
Spotted jellies swimming in a Tokyo aquarium. Jellyfish, also known as sea jellies, are the medusa-phase of certain gelatinous members of the subphylum Medusozoa, which is a major part of the phylum Cnidaria.
Emilia Pérez star Karla Sofía Gascón is making history.. On Monday, Dec. 9, the performer became the first out transgender woman to be nominated in a film category. Gascón, who vies against ...
Christmas cheer is in the air, and dogs across the world are already in the holiday spirit.. Pictures captured of man's best friend around the globe include everything from dogs dressed as Santa ...
Figure 1: Tidal interaction between the spiral galaxy NGC 169 and a smaller companion [1]. The tidal force or tide-generating force is a gravitational effect that stretches a body along the line towards and away from the center of mass of another body due to spatial variations in strength in gravitational field from the other body.
(Cold air, though uncomfortable at first, can also be good for your mood, she said.) “You’re feeling this way because you are human,” she said. Setting boundaries and expectations.