q: Cells that divide uncontrollably may form _.
Options:
- (A) masses of eukaryotic origin.
- (B) masses of neoplastic origin
- (C) cause people to become sick.
- (D) Microscopic organisms
- (E) masses of prokaryotic origin.
- (F) masses of epithelial origin.
- (G) Veins and arteries.
- (H) Wither and die
a: (B)... Explanation: Cells that divide uncontrollably may form a tumor, or abnormal mass of cells. Tumor Tumors are masses of neoplastic origin. Cells that divide uncontrollably may form masses of neoplastic origin. That's why the answer is (B).

q: What is larger than ponds?
Options:
- (A) rivers
- (B) deltas
- (C) H 2 O
- (D) loch
- (E) toads
- (F) drop
- (G) puddle
- (H) bird bath
a: (D)... Explanation: Lakes are generally bigger and deeper than ponds. Scotland s lochs , including the famous Loch Ness, are glacial lakes. Lochs are bigger and deeper than ponds. That's why the answer is (D).

q: How do some insects communicate?
Options:
- (A) sound
- (B) sensory neurons
- (C) Decibels
- (D) electronic waves
- (E) progesterone
- (F) Vibrates
- (G) pheromones
- (H) radio waves
a: (G)... Explanation: Ants communicate with chemicals called pheromones. Ants are of extreme importance in the insect world. Some insects communicate with chemicals called pheromones. That's why the answer is (G).

q: Arthropods with what may live in large colonies and have complex social behaviors.
Options:
- (A) fur
- (B) gills
- (C) animals
- (D) complex
- (E) Wasps
- (F) vertebrae
- (G) Flowers
- (H) wings
a:
(H)... Explanation: Insects may live in large colonies and have complex social behaviors. Insects are the only arthropod to have wings. Arthropods with wings may live in large colonies and have complex social behaviors. That's why the answer is (H).