Answer the following question given this paragraph: Most fossils form when a dead organism is buried in sediment. Layers of sediment slowly build up. The sediment is buried and turns into sedimentary rock. The remains inside the rock also turn to rock. The remains are replaced by minerals. The remains literally turn to stone. Fossilization is illustrated in Figure below . Q: Most fossils form when a dead organism is buried in what? Choices: - soil - ash - sand - sediment A:
sediment
Answer the following question given this paragraph: Chloride ions are important in neutralizing positive ion charges in the body. If chloride is lost, the body uses bicarbonate ions in place of the lost chloride ions. Thus, lost chloride results in an increased reabsorption of bicarbonate by the renal system. Q: Why does the body react to a loss of chloride ions? Choices: - increased tricarbonate reabsorption - decreased bicarbonate reabsorption - decreased tricarbonate reabsorption - increased bicarbonate reabsorption A:
increased bicarbonate reabsorption
Q: Answer the following question given this paragraph: Plasma Anticoagulants An anticoagulant is any substance that opposes coagulation. Several circulating plasma anticoagulants play a role in limiting the coagulation process to the region of injury and restoring a normal, clot-free condition of blood. For instance, a cluster of proteins collectively referred to as the protein C system inactivates clotting factors involved in the intrinsic pathway. TFPI (tissue factor pathway inhibitor) inhibits the conversion of the inactive factor VII to the active form in the extrinsic pathway. Antithrombin inactivates factor X and opposes the conversion of prothrombin (factor II) to thrombin in the common pathway. And as noted earlier, basophils release heparin, a short-acting anticoagulant that also opposes prothrombin. Heparin is also found on the surfaces of cells lining the blood vessels. A pharmaceutical form of heparin is often administered therapeutically, for example, in surgical patients at risk for blood clots. Q: What do you call any substance that opposes coagulation? Choices: - dissolvent - antibodies - toxin - anticoagulant A:
A: anticoagulant
Question: Answer the following question given this paragraph: Q: Occuring throughout the lifespan of the organism, what stages proceed in a certain order? Choices: - yearly stages - life effectiveness stages - genetic stages - life cycle stages A:
Answer: life cycle stages
*Question*
Answer the following question given this paragraph: Only the top 200 meters or so of water receive enough sunlight for photosynthesis. This part of the water is called the photic zone. Below 200 meters, there is too little sunlight for photosynthesis to take place. This part of the water is called the aphotic zone. In this zone, food must come from other sources. It may be made by chemosynthesis, in which microorganisms use energy in chemicals instead of sunlight to make food. Or, food may drift down from the water above. Q: What is the top part of water able to receive enough sunlight for photosynthesis called? Choices: - thymic zone - synthesis zone - fantasmic zone - photic zone A:
**Answer**
photic zone
(Question)
Answer the following question given this paragraph: Sometimes ecological succession occurs in areas where life has already existed. These areas already have soil full of nutrients. Secondary succession is the type of succession that happens after something destroys the habitat, such as a flood or other natural disaster. Abandoning a field that was once used for agriculture can also lead to secondary succession ( Figure below ). In this case, the pioneer species would be the grasses that first appear. Lichen would not be necessary as there is already nutrient-rich soil. Slowly, the field would return to its natural state. Q: What is the type of succession that happens after the destruction of a habitat? Choices: - primary succession - typical succession - tertiary succession - secondary succession A:
(Answer)
secondary succession