Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Reproductive Hazards ?
    ### Response:
    Both the male and female reproductive systems play a role in pregnancy. Problems with these systems can affect fertility and the ability to have children. Something that affects reproductive health is called a reproductive hazard. Examples include:            - Radiation    - Metals such as lead and mercury    - Chemicals such as pesticides    - Cigarettes    - Some viruses    - Alcohol           For men, a reproductive hazard can affect the sperm.
    