Answer the following question given this paragraph: The red liquid in this thermometer is alcohol. Alcohol expands uniformly over a wide range of temperatures. This makes it ideal for use in thermometers. Q: How does alcohol expand over a wide range of temperatures? Choices: - variably - exponentially - erratically - uniformly A:
uniformly
Answer the following question given this paragraph: Water potential is a measure of the potential energy in water. Plant physiologists are not interested in the energy in any one particular aqueous system, but are very interested in water movement between two systems. In practical terms, therefore, water potential is the difference in potential energy between a given water sample and pure water (at atmospheric pressure and ambient temperature). Water potential is denoted by the Greek letter (psi) and is expressed in units of pressure (pressure is a form of energy) called megapascals (MPa). The potential of pure water (wpure H2O) is, by convenience of definition, designated a value of zero (even though pure water contains plenty of potential energy, that energy is ignored). Water potential values for the water in a plant root, stem, or leaf are therefore expressed relative to wpure H2O. The water potential in plant solutions is influenced by solute concentration, pressure, gravity, and factors called matrix effects. Water potential can be broken down into its individual components using the following equation:. Q: What is the measure of water potential? Choices: - trials - fluctuations - spores - megapascals A:
megapascals
Q: Answer the following question given this paragraph: Unlike energy, matter doesn't need to be constantly added to ecosystems. Instead, matter is recycled through ecosystems. Water and elements such as carbon and nitrogen that living things need are used over and over again. Q: Unlike energy, what doesn't need to be constantly added to ecosystems because it is recycled through ecosystems? Choices: - water - nutrients - vapor - matter A:
A: matter
Question: Answer the following question given this paragraph: 45.3 Environmental Limits to Population Growth Populations with unlimited resources grow exponentially, with an accelerating growth rate. When resources become limiting, populations follow a logistic growth curve. The population of a species will level off at the carrying capacity of its environment. Q: While populations with unlimited resources grow exponentially, the population of a species will level off when what limit of its environment is reached? Choices: - reproduction - niche - extinction - carrying capacity A:
Answer: carrying capacity
*Question*
Answer the following question given this paragraph: The wide range of movement allowed by synovial joints produces different types of movements. Angular movements are produced when the angle between the bones of a joint changes. Flexion, or bending, occurs when the angle between the bones decreases. Moving the forearm upward at the elbow is an example of flexion. Extension is the opposite of flexion in that the angle between the bones of a joint increases. Rotational movement is the movement of a bone as it rotates around its own longitudinal axis. Movement of the head as in saying "no" is an example of rotation. Q: What type of movements are produced when the angle between the bones of a joint changes? Choices: - microscopic - circular - oblong - angular A:
**Answer**
angular
Q: Answer the following question given this paragraph: Minerals form from dissolved substances when water evaporates. Q: What process does water undergo to leave behind dissolved substances? Choices: - accumulation - oxidation - ascension - evaporation A:
A: evaporation