Tim forgot his math book, so he was unable to complete his homework. What is the cause?

Erin's car had a flat tire, so she called a tow truck. What is the cause?

We turned up the heat since it was getting cold. We turned up the heat is the...

Our apartment is on the 11th floor, therefore, we have a great view of the city. Our apartment is on the 11th floor is the...

Janice didn't eat her breakfast quickly, so she missed the school bus. What is the effect?

What is the effect in this sentence? Due to peanut allergies, students aren't permitted to bring in baked goods.