Allergies arise when a foreign material such as pollen, bee venom or pet dander responds to your immune system or a food that in most people does not cause a reaction. Substances known as antibodies are formed by your immune system.

4 0

3 years ago

Read 2 more answers

List three factors that affect the rate of a chemical reaction

Darina [25.2K]

Explanation:

Three factors that affect the rate of a chemical reaction

are listed below:

1.presence/absence of catalyst

2.temperature

3.nature of reactants

HOPE THIS WILL HELP U

6 0

3 years ago

I need help please and give me an explanation

jeyben [28]

Column 1 because it has 1/8 valence electrons and alkaline metals are reactive

5 0

3 years ago