What comprises an arthropod's exoskeleton?
a. Keratin
b. Spicules
c. Chitin
d. Bone
ANS: C
An exoskeleton is a strong yet lightweight external covering. It provides support and protection to
arthropods. Chitin is a nitrogen-rich carbohydrate that is strengthened by calcium carbonate.
Information can be found in the section Advanced Invertebrates Have Complex Bodies and Internal
Systems.
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"McWorld" represents a Western, capitalist reaction to traditional and religious growth in the world's periphery
Indicate whether this statement is true or false.
Concepción, Bolivia
Latitude:_______ Longitude:__________
Elevation:______m_______ft
Population:_______
Avg. Annual Temperature (°C, °F):_______
Annual Temp. Range (°C, °F):_______
Which of the following is true of the Earth's coastlines?
A) Most of the Earth's coastlines are relatively young and undergoing continuous change. B) The Earth's coastlines are among the oldest landforms on the planet. C) There are few inputs that directly affect the Earth's coastlines beyond tidal action. D) The Earth's coastline show a remarkable degree of similarity across the planet.
When a tornado is approaching from the southwest, its strongest winds are on its ____________________ side
Fill in the blank with correct word.