Disease
Lack of natural reourses
war
asteroid
Polution.
Basic truss bridge types found in North Carolina (source: HAER) A truss bridge can be characterized by the location of its traffic deck. At a pony truss, the travel surface passes along the bottom chords of trusses standing to either side that are not connected to each other at the top.
Answer:
C. 12m
Explanation:

from the graph v = 4m/s and t = 3 s
d = vt = 4 × 3 = 12 m