Choose from: 1). Damages them 2). Sulfur dioxide 3). Smoking 4). rays or beams 5). smoking tobacco 6). apocymarin 7). it needs them 8). heat energy
Q: Fact 1: Blood pressure is highest in arteries and lowest in veins. Fact 2: Apocymarin raises blood pressure. Given the two facts above, what affects veins and arteries?
A:
6).