Acanyon is a landform created by erosion.

a. primary

b. secondary

c. tertiary
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Option B, secondary

Explanation:

Secondary landforms are formed out of primary landform through some modification such as erosion, weathering , mass movement etc. Also all physical, chemical and biological forces acts to transform a primary landform into a secondary landforms.

A canyon is formed as result of continuous erosion of mountain, plateau and hill by water and wind over a long period of time

Thus, canyon are secondary structure.

Option B is correct

the bald eagle got 50 because everything gets 10% of what they consume and since 50 is ten % of 500 hundred that means the   grasshopper had to have consumed a plant with 5,000 calories of energy

it's anything that aren't producers and consumers.

explanation:

you've got to be clear on what "this" is