Acanyon is a landform created by erosion.

a. primary

b. secondary

c. tertiary
a need someone to pm me that i can ask questions for home schooling and i mean alote

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 answer is b.) hydrogen bonds between bases.

more words for this could be abiotic and biotic

abiotic: living organisms within an ecosystem

biotic: non-living organisms within an ecosystem