"Couch" Natural Recordings by Native Speakers
A couch is a piece of furniture designed for sitting or lounging, typically long and low to the ground with a back and arms, often used in living rooms or dens.
Cotyledons are the seed leaves that emerge first from a seed in the process of germination. They are the first leaves to appear on a seedling and typically contain stored nutrients that aid in the development of the young plant.
Cotylosaurs were a group of small to medium-sized, herbivorous or omnivorous reptiles that lived during the Middle to Late Triassic period, around 230-210 million years ago. They were characterized by their limb girdles and limb bones, which were similar to those of mammals. Cotylosaurs are often referred to as the "missing link" between early reptiles and mammals, as they share characteristics with both groups.