Flukes, tapeworms, and turbell are
Options:
- (A) major threat to health
- (B) types of flat leeches
- (C) Plant growth is reduced
- (D) types of earthworms
- (E) competing for resources
- (F) types of snakes
- (G) types of flatworms
- (H) parasites
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Let's think first: Flatworms belong to the phylum Platyhelminthes. Flatworms Flatworms or Platyhelminthes include flukes, tapeworms, and turbellarians. Types of flatworms are flukes, tapeworms, and turbellarians.... So the answer is [(G)]

What unwanted creature would be found on the surface of a human body using it as a host?
Options:
- (A) Tapeworm.
- (B) Leeches.
- (C) Pesticides
- (D) animals
- (E) insects
- (F) Hookworm
- (G) bacteria
- (H) Bracelet.
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Let's think first: Some parasites live on the surface of their host. Leeches are external parasites. Leeches are on the surface of the host .... So the answer is [(B)]

What is used as energy by most organisms?
Options:
- (A) sodium
- (B) water
- (C) energy.
- (D) food
- (E) sugar
- (F) Energy
- (G) solutes
- (H) light
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Let's think first: Glucose is used for energy by the cells of most organisms. For instance, glucose is a sugar. Sugar is used for energy by the cells of most organisms.... So the answer is [(E)]

What is rain that absorbs into the earth called?
Options:
- (A) aqueous solution
- (B) heat energy
- (C) soilwater
- (D) groundwater
- (E) peachleaf willow
- (F) mud
- (G) puddle
- (H) water vapor
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Let's think first: Some precipitation that falls on land may soak into the ground, becoming groundwater. Rain is also known as precipitation. Rain that falls on land may soak into the ground and become groundwater.... So the answer is [(D)]

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.
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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 can dna contain the instructions for?
Options:
- (A) keeps the organism warm
- (B) Something to move
- (C) Plant reproduction
- (D) a single protein
- (E) A computer
- (F) Animal survival
- (G) survival
- (H) an engine
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Let's think first: Most genes contain the instructions for a single protein. Genes are made of DNA, the substrate of hereditary information. DNA can contain the instructions for a single protein.... So the answer is [(D)]