Which symptom indicates that someone has stress?
1: the heart beat speeds up
2: muscles become more relaxed
3: the blood vessels contract
4: adrenaline decreases the sugar in the blood

Bmust be the answer, as technically all organs move, so a is incorrect. all organs are made of different types of cells, so that isn’t a problem, so c is also incorrect. human hearts are very similar to many other animals’ hearts, so d is also incorrect, yet the heart is made of muscle, which is hard to grow in the lab so it would be correct to say b

You can always get a sexually transmitted disease. always ask for consent before doing anything..because you never know if your bf or gf has an std!