Cell Differentiation and Tissue. Within multicellular organisms<span>, </span>tissues<span> are organized communities of cells that work together to carry out a specific function. The exact role of a tissue in an </span>organism<span> depends on what types of cells it contains !
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It was a life changing event. Around 66 million years ago, at the end of the Cretaceous period, an asteroid struck Earth, triggering a mass extinction that wiped out the dinosaurs and around 75% of all species.
Dinosaurs roamed the Earth in the Mesozoic Era, which is divided into the Triassic, Jurassic, and Cretaceous periods. They first arose during the Triassic period about 245 million years ago. Dinosaurs first appeared in the Middle Triassic and became the dominant terrestrial vertebrate in the Late Triassic or Early Jurassic, occupying this position for about 150 to 135 million years until their demise at the end of the Cretaceous. This era is popularly known as the "Age of Reptiles" and for good reason: reptiles, and particularly dinosaurs, were the dominant terrestrial vertebrate animals at the time. The PT extinction was the most severe in Earth's history, and was likely driven by intense volcanic eruptions and associated rapid climate change. This extinction decimated many early groups of reptiles and amphibians, and may have created environmental space for dinosaurs and other new groups to evolve.
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Answer:
The death rate is higher than the birth rate. The birth rate is higher than the death rate.
Explanation:
Reducing atp to adp forms glucose along with it . immediate source is glucose monophosphate and water
Answer:
Lymphatic vessels are part of the lymphatic system.
Explanation:
They are similar to blood vessels that are found in the cardiovascular system, but they carry lymph instead of blood.
