Answer: A condom is a thin latex tube that is rolled over the penis to help prevent pregnancy and the spread of STDs. Condoms, like other contraception, is not 100% effective. It can break, releasing semen into the vagina. Also, if either of the people having sex are allergic to latex, this can cause an allergic reaction. There are condoms made from animal sources that can be used in this situation, but they are not as effective and are very expensive at about 5 dollars each.
Answer: Selective breeding can result in repeated transmission of deleterious genetic material, meaning the DNA code becomes more corrupt with alterations, deletions, and additions. The likely hood of chromosomal abnormalities also increases. In other words, more genetic abnormalities or diseases pop up in offspring that can result in still-births or offspring affected with a physical or mental condition for the rest of its life.
Answer: It is controversial whether or not blue tooth technology causesharm to the human body. Blue tooth technology emits radiation thatsome say is too small of an amount to make a difference, whileothers say that any amount of radiation has the potential to causeharm in humans.
Answer: The senses protect us by causing an almost immediate reflexive reaction to things that might harm us without our having to think about when delay might cause harm, or worse harm. As an example, when you touch something hot, the sense of touch causes a reflexive reaction to pain and makes us jerk away without havig to think about it.
Answer: If alcohol is consumed in moderation, there are no harms to the body. To the contrary, the moderate consumption of alcohol is associated with better health and greater longevity than is either abstaining from it or abusing it.
However, alcohol abuse reduces your inhibitions, which can lead you to do stupid things which cause other injuries. It also wears down your liver (the liver filters toxins like alcohol from the blood), and can cause liver disease if you drink too much. It may also have adverse effects on the brain.