the answer will be c.Thrid class because one expample is the elbow joint
They are able to obtain enough oxygen because <span>they have more efficient lungs than other vertebrates.
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The medulla is the inner region of the parenchyma of the kidney. The medulla consists of multiple pyramidal tissue masses, called renal pyramids.
The kidney's parenchyma's interior section is called the medulla.
The renal pyramids, which are triangle-shaped structures with a dense network of nephrons within them, are a collection of several pyramidal tissue masses that make up the medulla.
The Bowman's capsule, which is shaped like a cup and is located in the cortex of the kidney, is at one end of each nephron. The glomerulus, a group of capillaries that conducts blood from the renal arteries into the nephron where plasma is filtered via the capsule, is encircled by it.
The filtered fluid exits the capsule and travels via the collecting ducts and distal convoluted tubule before exiting the body through the ureter. It then travels down the proximal convoluted tubule to the loop of Henle. The complicated management of water and ion concentrations in the body is made possible by the numerous components of the nephrons, each of which is selectively permeable to distinct molecules.
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Thé indépendant variable is the park size and the dependent variable is the species richness. This is because the larger the park, the more species there can be, therefore the amount of species would depend on the size of the park
<span>Roots of plants take up water and minerals from the roots via the medium of passive transport and diffusion. The facilitated diffusion of mineral ions into the root cells requires specific channel proteins in the membranes. The uptake of mineral ions in the plant cells is influenced by electrical gradient, concentration gradients, ionic balance and pumping of hydrogen ion.</span>