Answer:
3.29ft/mi
Explanation:
The gradient of a river is the slope through which a river flows. It measures the vertical drop in elevation of river to the horizontal distance.
Mathematically;
River gradient = 
Elevation = 1229ft
Horizontal distance = 373miles
River gradient = 
= 3.29ft/mi
1. geologic time
2. stratum
You could have just googled these...
The types of organisms can be animals such as otters, birds, oysters, fish, crabs.
The greatest hazard to homes are when they are built on mountains
Answer:
Explanation:
Abyssal plain : very level area of the deep-ocean floor typically lying at the foot of the continental rise G
Guyot: A submerged flat-topped seamount H
Deep-ocean basin: portion of the seafloor between the continental margin and oceanic ridge; comprises 30 percent of Earth's surface C
Continental Volcanic Arc: Mountains are formed in part by igneous activity associated with the subduction of oceanic lithosphere beneath a continent A
Deep-Ocean Trench: Long, relatively narrow crease in the seafloor that forms the deepest parts of the ocean. D
Oceanic Plateau: extensive region of the ocean floor with thick accumulation of pillow basalts and other mafic rock E
Seamounts: An isolated volcanic peak that rises above the deep-ocean floor
Volcanic island arc: A chain of volcanic islands generally located a few hundred kilometers from a tench where active subduction of one oceanic slab beneath another is occuring; some trenches run parallel to an arc shapes row of active volcanoes
