Answer the following question given this paragraph: Evolution of Birds The evolutionary history of birds is still somewhat unclear. Due to the fragility of bird bones, they do not fossilize as well as other vertebrates. Birds are diapsids, meaning they have two fenestrations or openings in their skulls. Birds belong to a group of diapsids called the archosaurs, which also includes crocodiles and dinosaurs. It is commonly accepted that birds evolved from dinosaurs. Dinosaurs (including birds) are further subdivided into two groups, the Saurischia ("lizard like") and the Ornithischia ("bird like"). Despite the names of these groups, it was not the bird-like dinosaurs that gave rise to modern birds. Rather, Saurischia diverged into two groups: One included the long-necked herbivorous dinosaurs, such as Apatosaurus. The second group, bipedal predators called theropods, includes birds. This course of evolution is suggested by similarities between theropod. Q: Birds belong to a group of diapsids called the what? Choices: - conifers - mammals - aviators - archosaurs A:
archosaurs
(Question)
Answer the following question given this paragraph: The cerebellum is just below the cerebrum. It coordinates body movements. Many nerve pathways link the cerebellum with motor neurons throughout the body. Q: What is just below the cerebrum and coordinates body movements? Choices: - hypothalamus - bloodstream - spinal cord - cerebellum A:
(Answer)
cerebellum
Ques: Answer the following question given this paragraph: Weight is a measure of the force of gravity pulling down on an object, whereas buoyant force pushes up on an object. Which force is greater determines whether an object sinks or floats. Look at the Figure below . On the left, the object's weight is the same as the buoyant force acting on it, so the object floats. On the right, the object's weight is greater than the buoyant force acting on it, so the object sinks. Q: Weight is a measure of what force pulling down on an object? Choices: - light - distortion - motion - gravity A:
Ans: gravity
(Q).
Answer the following question given this paragraph: All waves are the way energy travels through matter. Ocean waves are energy traveling through water. They form when wind blows over the surface of the ocean. Wind energy is transferred to the sea surface. Then, the energy is carried through the water by the waves. Figure below shows ocean waves crashing against rocks on a shore. They pound away at the rocks and anything else they strike. Q: All waves are the way energy travels through what? Choices: - time - vacuums - space - matter A:
(A).
matter
Ques:Answer the following question given this paragraph: When continental crust is pulled apart, it breaks into blocks. These blocks of crust are separated by normal faults. The blocks slide up or down. The result is alternating mountain ranges and valleys. This topography is known as basin-and-range ( Figure below ). The area near Death Valley, California is the center of a classic basin-and-range province ( Figure below ). Q: When continental crust is pulled apart, it breaks into blocks that are separated by what? Choices: - layers - levels - holes - faults A:

Ans:faults
Ques: Answer the following question given this paragraph: Proteins are nutrients made up of smaller molecules called amino acids . Recall that there are 20 different amino acids arranged like "beads on a string" to form proteins. These amino acid chains then fold up into a three-dimensional molecule, giving the protein a specific function. Proteins have several important roles in the body. For example, proteins make up antibodies, muscle fibers and enzymes that help control cell and body processes. You need to make sure you have enough protein in your diet to obtain the necessary amino acids to make your proteins. Q: How many amino acids are arranged like "beads on a string" to form proteins? Choices: - 15 - 35 - 25 - 20 A:
Ans:
20