Line 1: *Most people can survive only a few days without water. Water is everywhere H20. Most people can survive only a few days without H20.*
*(D)*
Line 2: *Most people can survive only a few days without what?
Options:
- (A) carbon dioxide
- (B) oxygen
- (C) h2o
- (D) H20
- (E) NaCl
- (F) CO2
- (G) soda
- (H) urea*

Logic of a solution: *Evolution occurs in response to a change in the environment. Different environments Life is a changing phenomenon. Evolution occurs in response to changing phenomenon in life.*
*(D)*
The original question: *Evolution occurs in response to what in life?
Options:
- (A) static events
- (B) global warming
- (C) that material's properties
- (D) changing phenomenon
- (E) major threat to health
- (F) changing tides
- (G) Animal survival
- (H) isolated events*

Line 1: *Molecules of tRNA bring amino acids to the ribosome in the correct sequence. Ribosomes are assembled in the nucleoli. Molecules of tRNA and amino acids are assembled in the nucleoli.*
*(A)*
Line 2: *Molecules of trna and amino acids are assembled where?
Options:
- (A) nucleoli
- (B) A computer
- (C) Cooking
- (D) Most plants
- (E) boiling
- (F) animals
- (G) Power plants
- (H) retina*

Logic of a solution: *Centrioles are organelles involved in cell division. Centrioles come in pairs. Organelles that come in pairs are involved in cell division.*
*(F)*
The original question: *Organelles that come in pairs are involved in what?
Options:
- (A) movement
- (B) Veins and arteries.
- (C) competition
- (D) Plants growth
- (E) Animal survival
- (F) cell division
- (G) an organism's body
- (H) Plant reproduction*

Line 1: *Animals adapt to cold temperatures. Adaptation living things adapt to their environment. Animals are living things.*
*(G)*
Line 2: *Animals are _ things.
Options:
- (A) insects
- (B) invisible
- (C) edible
- (D) impossible
- (E) protected
- (F) sparkly
- (G) living
- (H) an object*

Line 1: *Heterotrophs are living things that cannot make their own food. All animals are heterotrophic and obtain their food from plants. Animals obtain their food from plants and cannot make their own food.*
*(E)*
Line 2:
*What obtain their food from plants and cannot make their own food?
Options:
- (A) bacteria
- (B) Flowers
- (C) trees
- (D) lichen
- (E) animals
- (F) fungi
- (G) humans
- (H) grass*