Answer the following question given this paragraph: Many common electric devices contain electromagnets. Some examples include hair dryers, fans, CD players, telephones, and doorbells. Most electric devices that have moving parts contain electric motors. You can read below how doorbells and electric motors use electromagnets. Q: What type of motor is used in most household devices with moving parts? Choices: - cooling motors - vacuum motors - thermal motors - electric motors A:
electric motors
(Question)
Answer the following question given this paragraph: Nonvascular plants include mosses, liverworts, and hornworts. They are the only plants with a life cycle in which the gametophyte generation is dominant. Figure below shows the life cycle of moss. The familiar, green, photosynthetic moss plants are gametophytes. The sporophyte generation is very small and dependent on the gametophyte plant. Q: Mosses, liverworts, and hornworts are examples of what type of plant in which gametophyte generation is dominant? Choices: - choanocyte plants - vascular plants - photoreactive plants - nonvascular plants A:
(Answer)
nonvascular plants
Ques: Answer the following question given this paragraph: Like the cells of all eukaryotes, animal cells have a nucleus and other membrane-bound organelles (see Figure below ). Unlike the cells of plants and fungi, animal cells lack a cell wall. This gives animal cells flexibility. It lets them take on different shapes so they can become specialized to do particular jobs. The human nerve cell shown in Figure below is a good example. Its shape suits its function of transmitting nerve impulses over long distances. A nerve cell would be unable to take this shape if it were surrounded by a rigid cell wall. Q: Unlike the cells of plants and fungi, animal cells lack what? Choices: - mitochondria - flagella - nuclei - cell wall A:
Ans: cell wall
(Q).
Answer the following question given this paragraph: Vertebrates. From the smallest of fish to us. One of the main features we all have in common is our backbone. The Vertebrates chapter describes the biological features of fish, amphibians, reptiles, birds, and mammals. Q: One of the main features all vetebrates have in common is what? Choices: - hard shell - brain - skeleton - backbone A:
(A).
backbone
Ques:Answer the following question given this paragraph: Evolution is a change in the characteristics of living things over time. As described by Darwin, evolution occurs by a process called natural selection . In natural selection, some members of a species, being better adapted or suited to their environment, produce more offspring than others, so they pass "advantageous traits" to their offspring. Over many generations, this can lead to major changes in the characteristics of the species. Evolution explains how living things are changing today and how modern living things have descended from ancient life forms that no longer exist on Earth. As living things evolve, they generally become better suited for their environment. This is because they evolve adaptations. An adaptation is a trait that helps an organism survive and reproduce in a given environment. Q: Evolution occurs by what process whereby better-adapted members pass along their traits, according to darwin? Choices: - organic selection - natural change - spontaneous variation - natural selection A:

Ans:natural selection
Ques: Answer the following question given this paragraph: There are two ways to control the current in a circuit. Since the current is directly proportional to the potential difference and inversely proportional to the resistance, you can increase the current in a circuit by increasing the potential or by decreasing the resistance. Q: Besides increasing the potential, how else can you increase current in a circuit? Choices: - increasing the resistance - increasing the heat - decreasing the heat - decreasing the resistance A:
Ans:
decreasing the resistance