*Question*
Q: What weak base is applied as an agricultural fertilizer in its pure form and is diluted to make a household cleanser? Read this paragraph and choose the correct option from the provided answers: Figure 4.7 Ammonia is a weak base used in a variety of applications. (a) Pure ammonia is commonly applied as an agricultural fertilizer. (b) Dilute solutions of ammonia are effective household cleansers. (credit a: modification of work by National Resources Conservation Service; credit b: modification of work by pat00139). Choices: - vinegar - nitrogen - carbon monoxide - ammonia A:
**Answer**
ammonia

*Question*
Q: The distance between two consecutive z discs or z lines is called what? Read this paragraph and choose the correct option from the provided answers: When a sarcomere shortens, some regions shorten whereas others stay the same length. A sarcomere is defined as the distance between two consecutive Z discs or Z lines; when a muscle contracts, the distance between the Z discs is reduced. The H zonethe central region of the A zonecontains only thick filaments and is shortened during contraction. The I band contains only thin filaments and also shortens. The A band does not shortenit remains the same lengthbut A bands of different sarcomeres move closer together during contraction, eventually disappearing. Thin filaments are pulled by the thick filaments toward the center of the sarcomere until the Z discs approach the thick filaments. The zone of overlap, in which thin filaments and thick filaments occupy the same area, increases as the thin filaments move inward. Choices: - contractile - ligule - radius - sarcomere A:
**Answer**
sarcomere

*Question*
Q: What part of a bird is adapted for the food it eats? Read this paragraph and choose the correct option from the provided answers: Bird beaks are generally adapted for the food they eat. For example, the sharp, hooked beak of a raptor is well suited for killing and tearing apart prey. The long beak of the hummingbird in Figure below co-evolved with the tube-shaped flowers from which it sips nectar. Choices: - teeth - head - eye - beak A:
**Answer**
beak

*Question*
Q: Where is the fruiting body normally produced in relation to the food source? Read this paragraph and choose the correct option from the provided answers: The fruiting bodies are usually produced at the surface of the food source, rather than hidden within it. This allows the reproductive spores to be easily shed and carried away by the wind, water, or animals. The fruiting bodies are usually the only indication that a fungus is present. Like icebergs, the fruiting bodies represent only a tiny fraction of the whole fungus, with most of the fungus hidden from view. Choices: - at the root - in the soil - underneath the surface - at the surface A:
**Answer**
at the surface