Logic of a solution: *Gene flow occurs when individuals move into or out of a population. Internal migration describes moves within a country. Gene flow occurs when individuals migrate.*
*(G)*
The original question: *Migration increases what?
Options:
- (A) root growth
- (B) speed
- (C) distance
- (D) voltage
- (E) energy usage
- (F) Plants growth
- (G) gene flow
- (H) layers of fat*
Line 1: *Cells secrete acids and bases to maintain the proper pH for enzymes to work. Phosphatases are enzymes that remove phosphates from other enzymes. Cells secrete acids and bases to keep the proper pH for phosphatases to work properly.*
*(H)*
Line 2: *What is needed from cells for phosphatases to keep the proper ph?
Options:
- (A) plasma
- (B) secretion of bases only
- (C) secretion of proteins
- (D) metabolic reaction
- (E) it helps plants in growing
- (F) Positive charges
- (G) Transfers energy
- (H) secretion of acids and bases*
Logic of a solution: *Plants respond to daily and seasonal cycles and to disease. Plant diseases cause by bacteria. Plants respond to seasonal and daily cycles and to bacteria.*
*(A)*
The original question: *Bacteria causes what to be harmed?
Options:
- (A) plants
- (B) electronics
- (C) fossils
- (D) humans
- (E) animals
- (F) viruses
- (G) food
- (H) the skin*
Line 1: *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)*
Line 2: *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*
Logic of a solution: *Arteries generally carry oxygen-rich blood. Oxygen-rich blood is critical for erectile health. Arteries are critical for erectile health.*
*(F)*
The original question: *What are critical for erectile health?
Options:
- (A) fur and fat
- (B) Energy.
- (C) Energy
- (D) sweating
- (E) exercise
- (F) arteries
- (G) strength
- (H) a cuticle*
Logic of a solution: *Viruses are not cells at all, so they are neither prokaryotes nor eukaryotes. Viruses Viruses are the smallest agents of disease. The smallest agents of disease are not cells at all, so they are neither prokaryotes nor eukaryotes.*
*(C)*
The original question:

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
*What are not cells at all, so they are neither prokaryotes nor eukaryotes?
Options:
- (A) Something with a head, thorax, and abdomen
- (B) Microscopic organisms
- (C) The smallest agent of disease
- (D) Dead prehistoric beings
- (E) female sex cells
- (F) major threat to health
- (G) remains of prehistoric life
- (H) Something that smells like rotten eggs*