Fertilization of what leads to formation of multicellular embryo in venter
Options:
- (A) seeds
- (B) grow
- (C) epidermal
- (D) pollen
- (E) Deposition
- (F) fertile
- (G) orchids
- (H) gametes
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Let's think first: Fertilization of gametes produces a diploid zygote. Diploid zygote forms multicellular embryo in venter. Fertilization of gametes leads to formation of multicellular embryo in venter.... So the answer is [(H)]

What element can be stored in limestone for millions of years?
Options:
- (A) oxygen
- (B) Energy
- (C) matter
- (D) carbon
- (E) sodium
- (F) helium
- (G) rock salt
- (H) heat
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Let's think first: Carbon may be stored in sedimentary rock for millions of years. Limestone is a type of sedimentary rock. Carbon may be stored in limestone for millions of years.... So the answer is [(D)]

Running water is able to do what to minerals and oxygen?
Options:
- (A) evaporation
- (B) dissolve them
- (C) reducing acid rain
- (D) recycling
- (E) clean them
- (F) separate them
- (G) hydration
- (H) cool them
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Let's think first: Running water is better able to dissolve oxygen and nutrients than standing water. Mineral nutrients are interrelated. Running water is better able to dissolve oxygen and minerals than standing water.... So the answer is [(B)]

What harms the respiratory and circulatory systems?
Options:
- (A) Greenhouse gasses
- (B) burning coal
- (C) inoculation
- (D) incinerated mercury
- (E) fossil fuels
- (F) water vapor
- (G) Sulfur dioxide
- (H) air
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Let's think first: Air pollution harms the respiratory and circulatory systems. Incinerated mercury pollutes the air. Incinerated mercury harms the respiratory and circulatory systems.... So the answer is [(D)]

What uses food for energy?
Options:
- (A) Most plants
- (B) no organisms
- (C) agriculture
- (D) the Moon
- (E) animals
- (F) athletes
- (G) most organisms
- (H) the Sun
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Let's think first: Glucose is used for energy by the cells of most organisms. Food is converted into glucose. Food is used for energy by most organisms.... So the answer is [(G)]

What is one attribute of most reptiles?
Options:
- (A) aerobic capacity
- (B) good olfaction
- (C) a cuticle
- (D) warm-blooded
- (E) graptolites
- (F) an organism's body
- (G) permineralization
- (H) stamina
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Let's think first: Most reptiles have good eyesight and a keen sense of smell. Olfaction is the sense of smell and gustation is the sense of taste. Most reptiles have good olfaction.... So the answer is [(B)]