Answer the following question given this paragraph: A nonmetal is an element that is generally a poor conductor of heat and electricity. Many properties of nonmetals are the opposite of those seen in metals. There is a wider variation in properties among the nonmetals than among the metals, as seen in Figure below . Nonmetals exist in all three states of matter at room temperature. The majority are gases, such as nitrogen and oxygen. Bromine is a liquid, and a few are solids, such as carbon and sulfur. In the solid state, nonmetals are brittle, meaning that they will shatter if struck with a hammer. The solids are not lustrous, and their melting points are generally much lower than those of metals. On the periodic table in the Figure above , the nonmetals are shaded green and appear to the right of the stair-step line. Q: An element that is generally a poor conductor of heat and electricity is known as a ______ Choices: - magnet - alloy - superconductor - nonmetal A:
nonmetal
Answer the following question given this paragraph: A cyclic hydrocarbon is a hydrocarbon in which the carbon chain joins to itself in a ring. A cycloalkane is a cyclic hydrocarbon in which all of the carbon-carbon bonds are single bonds. Like other alkanes, cycloalkanes are saturated compounds. Cycloalkanes have the general formula of C n H 2n . The simplest cycloalkane is cyclopropane, a three-carbon ring. Q: What is a hydrocarbon in which the carbon chain joins to itself in a ring? Choices: - asymmetrical hydrocarbon - circular hydrocarbon - acid hydrocarbon - cyclic hydrocarbon A:
cyclic hydrocarbon
Q: Answer the following question given this paragraph: Competitive Exclusion Principle Resources are often limited within a habitat and multiple species may compete to obtain them. All species have an ecological niche in the ecosystem, which describes how they acquire the resources they need and how they interact with other species in the community. The competitive exclusion principle states that two species cannot occupy the same niche in a habitat. In other words, different species cannot coexist in a community if they are competing for all the same resources. An example of this principle is shown in Figure 45.24, with two protozoan species, Paramecium aurelia and Paramecium caudatum. When grown individually in the laboratory, they both thrive. But when they are placed together in the same test tube (habitat), P. aurelia outcompetes P. caudatum for food, leading to the latter's eventual extinction. Q: Which principle states that two species cannot occupy the same niche in a habitat? Choices: - complete exclusion - produce exclusion - tough exclusion - competitive exclusion A:
A: competitive exclusion
Question: Answer the following question given this paragraph: Electrons have negative charge and protons have positive charge. The magnitude of the charge is the same for both, . Q: What type of charge do electrons have? Choices: - positive - neutral - bipolar - negative A:
Answer: negative
*Question*
Answer the following question given this paragraph: Q: What orifice in the body is particularly helpful in both digestion and respiration? Choices: - nostril - nose - anus - mouth A:
**Answer**
mouth
Q: Answer the following question given this paragraph: Pollination must occur for fertilization to take place. Zygotes develop into embryos inside seeds, from which the next sporophyte generation grows. Q: What is a prerequisite for fertilization to take place in plants? Choices: - mitosis - photosynthesis - germination - pollination A:
A: pollination