[[Ques]]: Most carcinogens can cause cancer by causing mutations to what?
Options:
- (A) that material's properties
- (B) dexyribonucleic acid
- (C) Veins and arteries.
- (D) Chlorophyll
- (E) harmful substances
- (F) properties
- (G) a lot of human deaths
- (H) characteristics
[[Ans]]: [Most carcinogens cause cancer by producing mutations in DNA. DNA DNA is deoxyribonucleic acid. Most carcinogens cause cancer by producing mutations in dexyribonuclein acid.]
[(B)]

[[Ques]]: How do organisms give rise to children?
Options:
- (A) mitosis
- (B) reproduction
- (C) reproductive isolation
- (D) Plants growth
- (E) it needs them
- (F) litter
- (G) by indirect light
- (H) replenishing
[[Ans]]: [Reproduction is the process by which organisms give rise to offspring. Seed refers to offspring, children. Organisms give rise to children by reproduction.]
[(B)]

[[Ques]]: What would a person do that would reduce their body heat?
Options:
- (A) using steel
- (B) Exfoliation
- (C) Evaporation
- (D) drink a warm drink
- (E) burning coal
- (F) perspire
- (G) exercise outside
- (H) take a nap
[[Ans]]:
[Sweating reduces body heat. People of all ages and activity levels perspire or sweat. Perspiration reduces body heat.]
[(F)]