Ques:[Members of the apoda order can be found in _.
Options:
- (A) rivers in tundra regions.
- (B) They have webbed feet
- (C) female sex cells
- (D) epidermis and dermis
- (E) rivers in arid regions.
- (F) streams in arid regions.
- (G) microorganisms
- (H) streams in tropical regions]
Ans:[Caecilians can be found in moist soil near rivers and streams in tropical regions. Caecilians belong to the order Apoda or Gymnophiona. Members of the Apoda order can be found in streams in tropical regions.
(H)]

Ques:[Echinoderms are resistant to some:
Options:
- (A) starfish
- (B) enzymes
- (C) Toxicity
- (D) pesticide
- (E) parasites
- (F) toxins
- (G) boats
- (H) chemicals]
Ans:[Echinoderms lack a centralized nervous system. From animal experiments, it seems to be a central nervous system toxin. Echinoderms are resistant to some toxins.
(F)]

Ques:[The measurement of what falls from lower to higher altitudes?
Options:
- (A) snow
- (B) rain
- (C) Energy
- (D) heat
- (E) Inches
- (F) meters
- (G) H 2 O
- (H) motion]
Ans:[Temperature falls from lower to higher altitudes. Heat and temperature are the same. Heat falls from lower to higher altitudes.
(D)]

Ques:[What is something cells cannot survive without?
Options:
- (A) gas
- (B) Air
- (C) O2
- (D) CO2
- (E) Ca
- (F) O3
- (G) Fe
- (H) He]
Ans:
[Cells cannot survive without oxygen. And oxygen, O2, is the molecule to do it. Cells cannot survive without O2.
(C)]