Choose the One Most Appropriate Letter for Each

question 57

Multiple Choice

Choose the one most appropriate letter for each.
-lancelets

• A)cartilaginous skeleton; jaws
• B)reptile with four-chambered heart
• C)separate openings for the urinary, reproductive, and excretory systems
• D)legless amphibian
• E)invertebrate chordate; no metamorphosis
• F)endotherm with feathers
• G)limbless reptile
• H)most primitive fishes with jaws; extinct
• I)modern-day parasitic jawless vertebrate
• J)North America's only native marsupial
• K)adults are barrel-shaped and secretes a covering of polysaccharides
• L)egg-laying mammal
• M)swim bladder for buoyancy
• N)larvae typically have gills and develop lungs as they mature

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Definitions:

Atomic Numbers

The number of protons in the nucleus of an atom, which determines the chemical properties of the element.

Nuclear Research Facilities

Specialized installations designed for the study and development of nuclear technologies, including energy production and weapons research.

Atomic Number

The atomic number is the number of protons in the nucleus of an atom, determining the chemical properties of the element and its place in the periodic table.

Artificially Created

Made or produced by human beings rather than occurring naturally, typically as a copy of something natural.