Answer the following question given this paragraph: An electrolytic cell is the apparatus used for carrying out an electrolysis reaction. Figure below shows an electrolytic cell composed of Zn|Zn 2+ and Cu|Cu 2+ half-cells. Q: What is the apparatus used for carrying out an electrolysis reaction called? Choices: - fluorescent cell - biochemical cell - reversible cell - electrolytic cell A:
electrolytic cell
Answer the following question given this paragraph: Like equations in math, equations in chemistry must balance. There must be the same number of each type of atom in the products as there is in the reactants. In equation 1, count the number of hydrogen and oxygen atoms on each side of the arrow. There are two hydrogen atoms in both reactants and products. There are two oxygen atoms in the reactants but only one in the product. Therefore, equation 1 is not balanced. Q: What do you call the atomic "ingredients" that go into a chemical reaction? Choices: - propellants - complexes - Starters - reactants A:
reactants
Q: Answer the following question given this paragraph: The esophagus is a long, narrow tube that carries food from the pharynx to the stomach. It has no other purpose. Food moves through the esophagus because of peristalsis. At the lower end of the esophagus, a circular muscle, called a sphincter, controls the opening to the stomach. The sphincter relaxes to let food pass into the stomach. Then the sphincter contracts to prevent food from passing back into the esophagus. Q: What is the long, narrow tube that carries food from the pharynx to the stomach by the mechanism of peristalsis? Choices: - gallbladder - liver - spinal cord - esophagus A:
A: esophagus
Question: Answer the following question given this paragraph: The Water Cycle Water is essential for all living processes. The human body is more than one-half water and human cells are more than 70 percent water. Thus, most land animals need a supply of fresh water to survive. Of the stores of water on Earth, 97.5 percent is salt water (Figure 20.9). Of the remaining water, 99 percent is locked as underground water or ice. Thus, less than one percent of fresh water is present in lakes and rivers. Many living things are dependent on this small amount of surface fresh water supply, a lack of which can have important effects on ecosystem dynamics. Humans, of course, have developed technologies to increase water availability, such as digging wells to harvest groundwater, storing rainwater, and using desalination to obtain drinkable water from the ocean. Although this pursuit of drinkable water has been ongoing throughout human history, the supply of fresh water continues to be a major issue in modern times. Q: Around 97% of all water on earth is what type of water? Choices: - excess water - fresh water - rivers water - salt water A:
Answer: salt water
*Question*
Answer the following question given this paragraph: Blood vessels form a network throughout the body to transport blood to all the body cells. There are three major types of blood vessels: arteries, veins, and capillaries. All three are shown in Figure below and described below. Q: What are the three major types of blood vessels? Choices: - arteries , pups , capillaries - arteries, capilaries, tubes - sculptures , veins , capillaries - arteries, veins, capillaries A:
**Answer**
arteries, veins, capillaries
(Question)
Answer the following question given this paragraph: Fossils of ocean animals are found at the top of Mt. Everest. Mt. Everest is the highest mountain on Earth. These fossils show that the area was once at the bottom of a sea. The seabed was later uplifted to form the Himalaya mountain range. An example is shown in the Figure below . Q: What evidence is there that mt. everest was once at the bottom of a sea? Choices: - skulls - corals - glaciers - fossils A:
(Answer)
fossils