Answer:
A dolphin breathes through a single blowhole on the top surface of its head. The blowhole is covered by a muscular flap, which provides a watertight seal.
A dolphin holds its breath while below water.
The dolphin opens its blowhole and begins to exhale just before reaching the surface of the water. To open the blowhole, the dolphin contracts the muscular flap.
Explanation:
Answer: The fluid mosaic model describes the structure of the plasma membrane as a mosaic of components —including phospholipids, cholesterol, proteins, and carbohydrates—that gives the membrane a fluid character. Plasma membranes range from 5 to 10 nm in thickness.
Explanation:
A I believe so strong feeeling
Answer:
Mesosaurus (meaning "middle lizard") is an extinct genus of reptile from the Early Permian of southern Africa and South America.
Fossils like these were also the reason why researches believe that the continent of South America and Africa were once together.
thus this statement is True.
Explanation:
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have a great day ahead :)
A) lungs : is where the exchange of gas occure .
B) pair of spongy ,air filled organs located either side of the chest ; it has 2 tubes called bronchi at the end of them there is tiny sacs called alveoli in which where exchange occure .
C) it take the blood from the right ventrical to echange the carbon dioxied to oxygen inside the capillaries of the alveoli then pump it to the left atrium
A) kidney:is one of pair organs that remove wastes from the blood.
B)Surrounding each kidney is a tough, fibrous renal capsule and, beyond that, two layers of fat that serve as protection. ... Each consists of an outer renal cortex and an inner renal medulla. Flowing between these sections are nephrons.then the glomerulus.
C) The kidneys are two bean-shaped organs that extract waste from blood, balance body fluids, form urine, and aid in other important functions of the body.