What is an example of an echinoderm?
Options:
- (A) a fish
- (B) eel
- (C) starfish
- (D) parasites
- (E) ferns
- (F) shark
- (G) fertile
- (H) algae
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Let's think first: Echinoderms have a unique water vascular system with tube feet. Each starfish arm is lined with tube feet. Starfish are an echinoderm with a unique water vascular system.... So the answer is [(C)]


Organisms use what to store energy?
Options:
- (A) food
- (B) skin
- (C) fat
- (D) RNA
- (E) batteries
- (F) CO 2
- (G) bone
- (H) O2
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Let's think first: Organisms use lipids to store energy. Another name for fat is lipid . Organisms use fat to store energy.... So the answer is [(C)]


Producers that are adapted to very dry environments are called what?
Options:
- (A) xerophytes
- (B) ragweed
- (C) mammals
- (D) dry plants
- (E) animals
- (F) cactus
- (G) alpacas
- (H) bacteria
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Let's think first: Plants that are adapted to very dry environments are called xerophytes. If the plant is green, it is a producer. Producers that are adapted to very dry environments are called xerophytes.... So the answer is [(A)]


What shape are the things that develop from spores?
Options:
- (A) fungi
- (B) a prism
- (C) small
- (D) Heart
- (E) complex
- (F) bushes
- (G) ferns
- (H) gills
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Let's think first: Flowers produce spores that develop into gametophytes. Gametophytes are photosynthetic and often heart-shaped. Flowers produce spores that develop something heart-shaped.... So the answer is [(D)]


What is an example of an entity that can live on in a completely inactive state?
Options:
- (A) an object
- (B) sloths
- (C) hibernating bears
- (D) Conifers
- (E) chickenpox
- (F) barnacles
- (G) a fish
- (H) mammals
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Let's think first: Some viruses live in a dormant state inside the body. After an episode of chickenpox, the virus becomes dormant in the body. Chicken pox can live in an inactive state.... So the answer is [(E)]


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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Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
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)]