Ques:[What does the substance that male dogs have in urine to mark their territory do?
Options:
- (A) sweating
- (B) attract females
- (C) Release energy
- (D) repels females
- (E) attract enemies
- (F) attract males
- (G) adding heat
- (H) dangerous]
Ans:[Male dogs use pheromones in urine to mark their territory. Males produce 'pheromones' to attract females. Male dogs use something that attracts females in urine to mark their territory.
(B)]

Ques:[Which chemical controls sexual development and reproduction in females?
Options:
- (A) acetic acid
- (B) Hemoglobin
- (C) Fructose
- (D) barnacles
- (E) animals
- (F) Estrogen
- (G) Pesticides
- (H) Baby spray]
Ans:[Sex hormones are chemical messengers that control sexual development and reproduction. Estrogens are female sex hormones. Estrogen controls sexual development and reproduction in females.
(F)]

Ques:[What is still provided, whether the style is long or a mullet?
Options:
- (A) braids
- (B) it helps plants in growing
- (C) characteristics
- (D) insulation and protection
- (E) bowl cut
- (F) buzz cut
- (G) Mechanical energy
- (H) food and shelter]
Ans:[Hair helps to insulate and protect the body. Frankly, long hair is quite different to a mullet style. Whether worn long or as a mullet, there is still insulation and protection provided.
(D)]

Ques:[What kind of worm belongs to the phylum platyhelminthes?
Options:
- (A) homogenous
- (B) moves
- (C) dangerous
- (D) insects
- (E) tapeworm
- (F) parasites
- (G) white
- (H) graptolites]
Ans:
[Flatworms belong to the phylum Platyhelminthes. Flatworms Flatworms or Platyhelminthes include flukes, tapeworms, and turbellarians. Tapeworms belong to the phylum Platyhelminthes.
(E)]