Answer the following question given this paragraph: All mammals have lungs that are the main organs for breathing. Lung capacity has evolved to support the animal's activities. During inhalation, the lungs expand with air, and oxygen diffuses across the lung's surface and enters the bloodstream. During exhalation, the lungs expel air and lung volume decreases. In the next few sections, the process of human breathing will be explained. Q: What are the main organs for breathing in a mammal? Choices: - gills - nostrils - intestines - lungs A:
lungs
(Question)
Answer the following question given this paragraph: Neptune's appearance changes due to its turbulent atmosphere. Winds are stronger than on any other planet in the solar system. Wind speeds can reach 1,100 km/h (700 mph). This is close to the speed of sound! The rapid winds surprised astronomers. This is because Neptune receives little energy from the Sun to power weather systems. It is not surprising that Neptune is one of the coldest places in the solar system. Temperatures at the top of the clouds are about 218C (360F). Q: Why does neptune's appearance change? Choices: - the seasons - the changing orbit - the speed of rotation - turbulent atmosphere A:
(Answer)
turbulent atmosphere
Ques: Answer the following question given this paragraph: Movable joints are also the most common type of joint in your body. Your fingers, toes, hips, elbows, and knees all provide examples of movable joints. The surfaces of bones at movable joints are covered with a smooth layer of cartilage. The cartilage reduces friction between the bones. Ligaments often cross a joint, holding two nones together. For example, there are numerous ligaments connecting the leg bones across the knee joint. Q: What is the most common type of joint in the human body? Choices: - dorsal joints - transverse joints - proximal joints - movable joints A:
Ans: movable joints
(Q).
Answer the following question given this paragraph: Surface waves travel along the ground outward from an earthquake's epicenter. Surface waves are the slowest of all seismic waves. They travel at 2.5 km (1.5 miles) per second. There are two types of surface waves. Love waves move side-to-side, much like a snake. Rayleigh waves produce a rolling motion as they move up and backward ( Figure above ). Surface waves cause objects to fall and rise. They also cause objects to sway back and forth. These motions cause damage to rigid structures during an earthquake. Q: How many types of surface waves are there? Choices: - over a hundred - three - six - two A:
(A).
two
Ques:Answer the following question given this paragraph: Human cells have 23 pairs of chromosomes, and each chromosome within a pair is called a homologous chromosome . For each of the 23 chromosome pairs, you received one chromosome from your father and one chromosome from your mother. Alleles are alternate forms of genes found on chromosomes. Homologous chromosomes have the same genes, though they may have different alleles. So, though homologous chromosomes are very similar, they are not identical. The homologous chromosomes are separated when gametes are formed. Therefore, gametes have only 23 chromosomes, not 23 pairs. Q: How many pairs of chromosomes are found in human cells? Choices: - 25 - 24 - 13 - 23 A:

Ans:23
Answer the following question given this paragraph: The Universe contains about a hundred billion galaxies. Q: Approximately how many galaxies are there in the universe? Choices: - an infinite number - a trillion - an octillion - about a hundred billion A:
about a hundred billion