Question: Q: What do vertebrates possess that is made up of repeating bony units? Read this paragraph and choose the correct option from the provided answers: repeating bony units that make up the vertebral column of vertebrates. Choices: - notochord - skull - spinal cord - vertebral column A:
Answer: vertebral column

Question: Q: Where do lightnings build up? Read this paragraph and choose the correct option from the provided answers: Lightning is the discharge of static electricity that has built up on clouds. Every year, the earth experiences an average of 25 million lightning strikes. Lightning bolts travel at speeds up to 60,000 miles per second, and can reach temperatures of 50,000F, which is five times the temperature of the surface of the sun. The energy contained in a single lightning strike could light a 100 Watt light bulb 24 hours per day for 90 days. Choices: - stratosphere - air - troposphere - clouds A:
Answer: clouds

Question: Q: Defecating, urination, and even childbirth involve cooperation between the diaphragm and these? Read this paragraph and choose the correct option from the provided answers: Defecating, urination, and even childbirth involve cooperation between the diaphragm and abdominal muscles (this cooperation is referred to as the "Valsalva maneuver"). You hold your breath by a steady contraction of the diaphragm; this stabilizes the volume and pressure of the peritoneal cavity. When the abdominal muscles contract, the pressure cannot push the diaphragm up, so it increases pressure on the intestinal tract (defecation), urinary tract (urination), or reproductive tract (childbirth). The inferior surface of the pericardial sac and the inferior surfaces of the pleural membranes (parietal pleura) fuse onto the central tendon of the diaphragm. To the sides of the tendon are the skeletal muscle portions of the diaphragm, which insert into the tendon while having a number of origins including the xiphoid process of the sternum anteriorly, the inferior six ribs and their cartilages laterally, and the lumbar vertebrae and 12th ribs posteriorly. The diaphragm also includes three openings for the passage of structures between the thorax and the abdomen. The inferior vena cava passes through the caval opening, and the esophagus and attached nerves pass through the esophageal hiatus. The aorta, thoracic duct, and azygous vein pass through the aortic hiatus of the posterior diaphragm. Choices: - heart muscles - skeletal muscles - lung muscles - abdominal muscles A:
Answer:
abdominal muscles