Please answer this: Extract the answer to the question from the following context. Question: Is it easier to notice color differences or brightness adjustments? Context: Video data may be represented as a series of still image frames. The sequence of frames contains spatial and temporal redundancy that video compression algorithms attempt to eliminate or code in a smaller size. Similarities can be encoded by only storing differences between frames, or by using perceptual features of human vision. For example, small differences in color are more difficult to perceive than are changes in brightness. Compression algorithms can average a color across these similar areas to reduce space, in a manner similar to those used in JPEG image compression. Some of these methods are inherently lossy while others may preserve all relevant information from the original, uncompressed video.
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Answer: changes in brightness

Please answer this: Extract the answer to the question from the following context. Question: What can we assume is the Latin word for "and"? Context: The East India Company's arms, granted in 1698, were: "Argent a cross Gules; in the dexter chief quarter an escutcheon of the arms of France and England quarterly, the shield ornamentally and regally crowned Or." The crest was: "A lion rampant guardant Or holding between the forepaws a regal crown proper." The supporters were: "Two lions rampant guardant Or, each supporting a banner erect Argent, charged with a cross Gules." The motto was AUSPICIO REGIS ET SENATUS ANGLI (Latin: By right of the King and the Senate of England).
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Answer: ET

Please answer this: Extract the answer to the question from the following context. Question: Which types of cells can shoots produce? Context: The root system and the shoot system are interdependent the usually nonphotosynthetic root system depends on the shoot system for food, and the usually photosynthetic shoot system depends on water and minerals from the root system. Cells in each system are capable of creating cells of the other and producing adventitious shoots or roots. Stolons and tubers are examples of shoots that can grow roots. Roots that spread out close to the surface, such as those of willows, can produce shoots and ultimately new plants. In the event that one of the systems is lost, the other can often regrow it. In fact it is possible to grow an entire plant from a single leaf, as is the case with Saintpaulia, or even a single cell which can dedifferentiate into a callus (a mass of unspecialised cells) that can grow into a new plant. In vascular plants, the xylem and phloem are the conductive tissues that transport resources between shoots and roots. Roots are often adapted to store food such as sugars or starch, as in sugar beets and carrots.
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Answer:
shoots or roots