What comprises an arthropod's exoskeleton?
A) Keratin
B) Spicules
C) Chitin
D) None of these choices
C
You might also like to view...
What is the distance from the Abbott Seamount to L?’ihi, in kilometers? What is the difference between their ages? What has been the rate of movement of this region of the Pacific plate, in centimeters per year, over this time frame?
What will be an ideal response?
The changing distance between the earth and the sun over the course of the year is the main cause
of the seasons. Indicate whether the statement is true or false.
PCB contamination of the environment ________
A) is the main focus of the book Silent Spring B) was the main environmental problem in Lake Apopka C) results from over-application of pesticides D) is a continuing problem because PCBs are non-biodegradable and persist in the environment E) has never been documented outside the United States
The continental edge between locations 4 and 5 is probably
A. an active continental rift. B. not a plate boundary. C. where two plates are colliding. D. a divergent boundary. E. a convergent boundary.