Answer the following question given this paragraph: Vertebrates evolved from primitive chordates. This occurred about 550 million years ago. The earliest vertebrates may have been jawless fish, like the hagfish in Figure below . Vertebrates evolved a backbone to replace the notochord after the embryo stage. They also evolved a cranium , or bony skull, to enclose and protect the brain. Q: Vertebrates evolved from primitive forms of which creature? Choices: - arthropods - humanoids - cephalopods - chordates A:
chordates
Answer the following question given this paragraph: The Linnaean system of classification consists of a hierarchy of groupings, called taxa (singular, taxon). Taxa range from the kingdom to the species (see Figure below ). The kingdom is the largest and most inclusive grouping. It consists of organisms that share just a few basic similarities. Examples are the plant and animal kingdoms. The species is the smallest and most exclusive grouping. It consists of organisms that are similar enough to produce fertile offspring together. Closely related species are grouped together in a genus. Q: What do we call the system of classification consisting of a hierarchy of groupings called taxa? Choices: - lamarckian system - linchpin system - crocodilian system - linnaean system A:
linnaean system
Q: Answer the following question given this paragraph: For feeding, the insect head contains one pair of lower jaws and two pairs of upper jaws. Insects have also evolved a wide range of specialized mouthparts for eating certain foods. You can see some examples in Figure below . Q: How many pairs of upper jaws do insects have? Choices: - four pairs - six pairs - three pairs - two pairs A:
A: two pairs
Question: Answer the following question given this paragraph: On a contour map, a circle with inward hatches indicates a depression. Q: What topographic feature does a circle with inward hatches represent on a contour map? Choices: - a lake - vegetation - a mountain - a depression A:
Answer: a depression
*Question*
Answer the following question given this paragraph: Pressure is what results when gas particles rebound off the walls of their container. The basic unit of pressure is the newton per square meter (N/m2). This combined unit is redefined as a pascal (Pa). One pascal is not a very large amount of pressure. A more useful unit of pressure is the bar, which is 100,000 Pa (1 bar = 100,000 Pa). Other common units of pressure are the atmosphere (atm), which was originally defined as the average pressure of Earth's atmosphere at sea level; and mmHg (millimeters of mercury), which is the pressure generated by a column of mercury 1 mm high. The unit millimeters of mercury is also called a torr, named after the Italian scientist Evangelista Torricelli, who invented the barometer in the mid1600s. A more precise definition of atmosphere, in terms of torr, is that there are exactly 760 torr in 1 atm. A bar equals 1.01325 atm. Given all the relationships between these pressure units, the ability to convert from one pressure unit to another is a useful skill. Q: What results when gas particles rebound off the walls of their container? Choices: - light - pull - weight - pressure A:
**Answer**
pressure
(Question)
Answer the following question given this paragraph: The process of generating electric current with a changing magnetic field is called electromagnetic induction . It occurs whenever a magnetic field and an electric conductor, such as a coil of wire, move relative to one another. As long as the conductor is part of a closed circuit, current will flow through it whenever it crosses magnetic field lines. One way this can happen is pictured in Figure below . It shows a magnet moving inside a wire coil. Another way is for the coil to move instead of the magnet. Q: When you change a magnetic field through electromagnetic induction what do you create? Choices: - cooling current - microwave current - Light Current - electric current A:
(Answer)
electric current