No a solution is not a combination a combination is when you combine something
Answer: 0.69 m/ mile.
Explanation:
The altitude gradient between two cities X and Y = 
Given: Two cities are separated by 200 miles.
City X has an altitude of 122 meters.
City Y has an altitude of 260 meters.
The altitude gradient between two cities X and Y =

Hence, the altitude gradient between the two cites = 0.69 m/ mile.
Answer:
fibrous root because they form a wide network of thin roots that originate from the stem and stay close to the surface of the soil.
Carried on the X or Y chromosomes
It's 163 to 164 centimeters meters