The chain on a bicycle rusts faster when the bicycle is left outside in damp conditions. which of the following factors affect the rate at which the bicycle chain rusts?
a) surface area
b) concentration of oxygen atoms in air
c) temperature
d) all of the above
e) b and c
f) a and c
g) a and b

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.

b is the correct answer

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