Many consumers feed at more than one what?
Options:
- (A) ground level
- (B) kinetic energy
- (C) major threat to health
- (D) level of sound
- (E) eat plants or other animal
- (F) level on the pyramid
- (G) level of height
- (H) Inches or fractions of inches.
--
Let's think first: Many consumers feed at more than one trophic level. Each level on the pyramid represents a trophic level. Many consumers feed at more than one level on the pyramid.... So the answer is [(F)]

What is produced by alcoholic fermentation of glucose in corn?
Options:
- (A) peachleaf willow
- (B) A compound that donates proton
- (C) A cleaning fluid
- (D) A source of electricity
- (E) A transportation fuel
- (F) Organic compounds
- (G) A yeast
- (H) Chemical energy
--
Let's think first: Ethanol is produced by alcoholic fermentation of the glucose in corn or other plants. Ethanol is another transportation fuel. A transportation fuel is produced by alcoholic fermentation of the glucose in corn or other plants.... So the answer is [(E)]

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 is it called when an animal divides into two parts?
Options:
- (A) limb amputation
- (B) The bending of a ray of light
- (C) Veins and arteries.
- (D) epidermis and dermis
- (E) the body's largest organ
- (F) Leptospirosis
- (G) refraction of light
- (H) asexual reproduction
--
Let's think first: Fission takes place when an animal divides into two parts. Asexual reproduction is by fragmentation, budding, or fission. Asexual reproduction is when an animal divides into two parts.... So the answer is [(H)]

Introns are areas that
Options:
- (A) it keeps an organism warm
- (B) Plant reproduction
- (C) the wearing away of rock
- (D) do not code for protein
- (E) Something coming from a gland
- (F) Plant growth is reduced
- (G) allow growth
- (H) produce offspring
--
Let's think first: Introns are regions that do not code for proteins. An area is a rectangular region of cells. Introns are areas that do not code for proteins.... So the answer is [(D)]

What type of trunk does evergreen usually have?
Options:
- (A) oak
- (B) greenwood
- (C) woody
- (D) bark
- (E) hollowed
- (F) Spruce
- (G) spiny
- (H) bent
--
Let's think first: Most modern gymnosperms are trees with woody trunks. Gymnosperms are the plants that are known as evergreens. Evergreens are mostly trees with woody trunks.... So the answer is [(C)]