Grapevines are plants that shed their leaves
Options:
- (A) Winter
- (B) during the day
- (C) Exfoliation
- (D) every season
- (E) on random occasion
- (F) seasonally
- (G) When it's cold
- (H) in no seasons
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Let's think first: Plants that shed their leaves seasonally each year are called deciduous plants. Grapevines are woody deciduous plants. Grapevines are plants that shed their leaves seasonally.... So the answer is [(F)]

What is one thing studied in immunology?
Options:
- (A) illness
- (B) antigens
- (C) humanism
- (D) health
- (E) philosophy
- (F) resistance
- (G) symbology
- (H) fever
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Let's think first: Antigens are molecules that the immune system recognizes as foreign to the body. Immunology is the study of the immune system. Immunology includes the study of antigens.... So the answer is [(B)]

What regrows broken off segments of itself?
Options:
- (A) barnacles
- (B) teeth
- (C) roots
- (D) earthworm
- (E) Leptospirosis
- (F) spiders
- (G) cells
- (H) root growth
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Let's think first: Annelids have the amazing capacity to regrow segments that break off. Earthworms are annelids meaning segmented. Earthworms can regrow broken off segments of their bodies.... So the answer is [(D)]

What affects the respiratory and circulatory systems in the body?
Options:
- (A) HIV
- (B) sulfur
- (C) smog
- (D) stress
- (E) fever
- (F) sweat
- (G) heat
- (H) tar
--
Let's think first: Air pollution harms the respiratory and circulatory systems. An example of an air pollution reaction is the production of photochemical smog. Smog harms the respiratory and circulatory systems.... So the answer is [(C)]

What falls decreasingly on the earth from the equator to the poles?
Options:
- (A) autumn
- (B) heat
- (C) chill
- (D) Vapor
- (E) Energy
- (F) cold
- (G) summer
- (H) Mass
--
Let's think first: Temperature falls from the equator to the poles. Temperature is a measure of the amount of heat. Heat falls from the equator to the poles.... So the answer is [(B)]

Where do most green producers live at on earth?
Options:
- (A) more abundant
- (B) animals
- (C) agriculture
- (D) Earth
- (E) survival
- (F) alluvial
- (G) Conifers
- (H) everywhere
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Let's think first: Plants live just about everywhere on Earth. If the plant is green, it is a producer. Green producers live just about everywhere on Earth.... So the answer is [(H)]