What is a major change that happens in menopause?
Options:
- (A) forest is destroyed
- (B) breasts develop
- (C) Plant growth is reduced
- (D) direct damage to the lungs
- (E) pubic bones expand
- (F) menstruation begins
- (G) menstruation stops
- (H) decreases its bodily water
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Let's think first: Menopause occurs when menstruation stops occurring, usually in middle adulthood. Clearly, middle adulthood is a time change and development. During menopause comes a time of change and development, including when menstruation stops.... So the answer is [(G)]

Where do organisms cluster on the ocean floor?
Options:
- (A) neutralized water
- (B) where they used to live
- (C) hot alkaline water
- (D) fissures of hot, acidic water
- (E) sedimentary rocks
- (F) fissures blasting cold water
- (G) at or near the margins
- (H) an area swollen with pus
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Let's think first: Organisms cluster around hydrothermal vents in the ocean floor. Hydrothermal vents are fissures in the ocean floor that leak hot, acidic water. Organisms cluster around fissures in the ocean floor that leak hot, acidic water.... So the answer is [(D)]

What is critical?
Options:
- (A) Balance
- (B) oxygen
- (C) recovery
- (D) Electrical
- (E) heat
- (F) sun's heat
- (G) stay warm
- (H) stamina
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Let's think first: Balance is the ability to sense and maintain body position. Body position is critical. Balance is critical.... So the answer is [(A)]

Where is brca2 located?
Options:
- (A) retina
- (B) lungs
- (C) chromatic
- (D) the eyes
- (E) chromosome
- (F) chromography
- (G) chrome
- (H) sensory neurons
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Let's think first: Chromosomes contain genes, which code for proteins. Another gene, named BRCA2, has also been identified. Chromosomes contain BRCA2.... So the answer is [(E)]

_ lack respiratory and excretory systems.
Options:
- (A) graptolites
- (B) insects
- (C) ferns
- (D) barnacles
- (E) fossil fuels
- (F) Allergies
- (G) starfish
- (H) parasites
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Let's think first: Echinoderms lack respiratory and excretory systems. Echinoderms are represented by the starfish. Starfish lack respiratory and excretory systems.... So the answer is [(G)]

Mammals find breath through the action of what thing beneath their lungs?
Options:
- (A) matter
- (B) the skin
- (C) muscle
- (D) organ
- (E) lmestone
- (F) oxygen
- (G) gas
- (H) Epidermis
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Let's think first: Mammals breathe with the help of a diaphragm. Hiccups are caused by involuntary spasms of the diaphragm, the muscle beneath the lungs. Mammals breathe with the help of a muscle below the lungs.... So the answer is [(C)]