Girls have used what to learn behaviors for generations?
Options:
- (A) Birds
- (B) trees
- (C) rainbows
- (D) sound
- (E) alleles
- (F) bows
- (G) nerves
- (H) dolls
--
Let's think first: Behaviors can be learned through play. Girls have played with dolls for generations. Girls have used dolls to learn behaviors for generations.... So the answer is [(H)]


How many types can viruses infect?
Options:
- (A) mice
- (B) pigs
- (C) bird
- (D) RNA
- (E) ova
- (F) tiny
- (G) HPV
- (H) Two
--
Let's think first: Viruses often infect bacteria. Bacteria are normally classified as either 'good' bacteria or 'bad' bacteria. Viruses can infect good and bad types.... So the answer is [(H)]


Why do tigers compete?
Options:
- (A) to get along with others
- (B) pressure differences.
- (C) to give territory to others
- (D) They can distract drivers
- (E) mate with females
- (F) a hemisphere is tilted away from the sun
- (G) to listen to the alpha male
- (H) to gain territory and mates
--
Let's think first: Animals may compete for territory, water, food, or mates. Animals such as lions and tigers fight. Tigers may compete for territory, water, food, or mates.... So the answer is [(H)]


What can be a disease with genetic traits?
Options:
- (A) Allergies
- (B) cancer
- (C) blood
- (D) flu
- (E) disease cells
- (F) anemia
- (G) Smoking
- (H) illness
--
Let's think first: Cancer genes can be inherited. Genetic diseases are diseases that are inherited. Cancer genes can be genetic.... So the answer is [(B)]


Fungi spores can multiply through what?
Options:
- (A) natural selection
- (B) trees
- (C) mitosis
- (D) sun's heat
- (E) death
- (F) Conifers
- (G) Deposition
- (H) pregnancy
--
Let's think first: Fungi spores can develop into new haploid individuals without being fertilized. Haploid cells multiply asexually through mitosis. Fungi spores can multiply through mitosis.... So the answer is [(C)]


For animals, displays of color can be viewed as:
Options:
- (A) spectrum
- (B) prudishness
- (C) rainbow
- (D) courtship
- (E) positive
- (F) harm them
- (G) produce light
- (H) Movement
--

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Let's think first: Courtship is behavior that is intended to attract a mate. Almost all animals display colors to attract a mate or to scare off a predator. Courtship can be manifested by displays of color.... So the answer is [(D)]