Question

2.According to the passage, when a few harmful chemicals combine, they can
O
cause us to experience allergies.
O cause a monumental task for homeowners.
O contribute to a syndrome called Multiple Chemical Sensitivity.
O contribute to photosynthesis in plants.​

Answer 1

Explanation:

2.According to the passage, when a few harmful chemicals combine, they can

O

cause us to experience allergies.

O cause a monumental task for homeowners.

O contribute to a syndrome called Multiple Chemical Sensitivity.

O contribute to photosynthesis in plants.

Answer 2

Answer:

cause us to experience allergies

Explanation:

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