In which system will the producer rely on crossbreeding to generate offspring

exposure to hazardous carcinogens and toxic substances can cause breathing problems, such as copd and various types of cancer. it also increases the risk of heart attacks and strokes and has serious (but no less unattractive) side effects, such as aging, yellow teeth, a terrible smell and damage to the vocal cords.

chemical preservatives

c. flammable gases, patient lying in standing water, combustible liquids near the victim