Q: What is pollution that enters water at just one point called? Read this paragraph and choose the correct option from the provided answers: Pollution that enters water at just one point is called point source pollution . For example, chemicals from a factory might empty into a stream through a pipe or set of pipes (see Figure below ). Pollution that enters in many places is called non-point source pollution . This means that the pollution is from multiple sources. With non-point source pollution, runoff may carry the pollution into a body of water. Which type of pollution do you think is harder to control?. Choices: - entry point pollution - point supply pollution - point supply pollution - point source pollution A:
point source pollution

Q: What force pulls bodies with mass together? Read this paragraph and choose the correct option from the provided answers: A very important point here is that the vertical motion of these two balls is identical. That is, they each fall exactly the same distance vertically in each succeeding second. The constant horizontal velocity of the blue ball has no effect on its accelerated vertical motion. Therefore, the vertical motion of the blue ball can be analyzed exactly the same as the vertical motion of the red ball. Choices: - thermal - solar - isolation - gravity A:
gravity

Q: Q: Experiments have shown that acceleration is exactly inversely proportional to mass, just as it is exactly linearly proportional to what? Read this paragraph and choose the correct option from the provided answers: where m is the mass of the system. Experiments have shown that acceleration is exactly inversely proportional to mass, just as it is exactly linearly proportional to the net external force. Choices: - net internal force - speed - kinetic energy - net external force A:
A: net external force

Question: Q: Vinegar is a solution of which acid? Read this paragraph and choose the correct option from the provided answers: Figure 14.11 Vinegar is a solution of acetic acid, a weak acid. (credit: modification of work by "HomeSpot HQ"/Flickr). Choices: - boric - magnesium - crystalline - acetic A:
Answer: acetic

*Question*
Q: What is the process by which plants gain energy and produce sugar? Read this paragraph and choose the correct option from the provided answers: 13 Photosynthesis 6 CO2 + 6 H2 O C6 H12 O6 + 6 O2 One of most important reactions in history of life: source of atmospheric O2 ultimately led to aerobic respiration and eukaryotes Responsible for bulk of glucose production Early experiments showed that mass of plant must be derived from substances in the air, not the soil Experiments with isotopes showed that liberated oxygen comes from water Experiments also showed that light is essential but that some reactions (e. , reduction of CO2 ) continue in the dark Plants do two big, important things during photosynthesis: gain energy (absorb light) and build sugar (glucose). Photosynthesis can be divided into two series of chemical reactions: the light (lightdependent) reactions and the dark (light-independent) reactions. In light reactions, light is absorbed; in dark reactions, sugar is built. Occurs when plants, algae, and autotrophic bacteria absorb light energy and build glucose. Choices: - glycolysis - respiration - chemosynthesis - photosynthesis A:
**Answer**
photosynthesis

(Q).
Q: What term describes anything that occupies space and has mass, and is generally divided into three states? Read this paragraph and choose the correct option from the provided answers: Matter is anything that occupies space and has mass. The three states of matter are solid, liquid, and gas. A physical change involves the conversion of a substance from one state of matter to another, without changing its chemical composition. Most matter consists of mixtures of pure substances, which can behomogeneous (uniform in composition) or heterogeneous (different regions possess different compositions and properties). Pure substances can be either chemical compounds or elements. Compounds can be broken down into elements by chemical reactions, but elements cannot be separated into simpler substances by chemical means. The properties of substances can be classified as either physical or chemical. Scientists can observe physical properties without changing the composition of the substance, whereas chemical propertiesdescribe the tendency of a substance to undergo chemical changes (chemical reactions) that change its chemical composition. Physical properties can be intensive or extensive. Intensive properties are the same for all samples; do not depend on sample size; and include, for example, color, physical state, and melting and boiling points. Extensive properties depend on the amount of material and include mass and volume. The ratio of two extensive properties, mass and volume, is an important intensive property called density. Choices: - stuff - lquid - galaxy - matter A:
(A).
matter