What are a major food source for other organisms, including humans?
Options:
- (A) Earthworms
- (B) Soft-bodied invertebrates
- (C) Fully cooking the oysters
- (D) absorb light energy
- (E) remains of prehistoric life
- (F) members of their own species
- (G) Humans
- (H) Lawns
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Let's think first: Mollusks are a major food source for other organisms, including humans. Mollusks are soft-bodied invertebrates. Soft-bodied invertebrates are a major food source for other organisms, including humans.... So the answer is [(B)]


When gametes fuse, the resultant zygote is:
Options:
- (A) fertile
- (B) diploid
- (C) Flowers
- (D) grow
- (E) infected
- (F) It expands
- (G) pollen
- (H) seeds
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Let's think first: Fertilization occurs when a sperm and an egg fuse to form a diploid zygote. Familiar types of gamete include the female ovum , or egg cell, and the male sperm cell. Fertilization occurs when the male and female gametes fuse to form a diploid zygote.... So the answer is [(B)]


What do animals use for energy storage?
Options:
- (A) photosynthesis
- (B) sweating
- (C) vitamin C
- (D) batteries
- (E) methane
- (F) glucose
- (G) sugar
- (H) lipids
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Let's think first: Organisms use lipids to store energy. Plants and animals are organisms. Animals use lipids to store energy.... So the answer is [(H)]


What animal can regrow middle segments when broken?
Options:
- (A) amoeba
- (B) geckos
- (C) humans
- (D) insects
- (E) Wasps
- (F) worms
- (G) toads
- (H) snakes
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Let's think first: Annelids have the amazing capacity to regrow segments that break off. Annelids include earthworms and leeches. Earthworms have the ability to regrow segments that break off.... So the answer is [(F)]


What kind of worm belongs to the phylum platyhelminthes?
Options:
- (A) homogenous
- (B) moves
- (C) dangerous
- (D) insects
- (E) tapeworm
- (F) parasites
- (G) white
- (H) graptolites
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Let's think first: Flatworms belong to the phylum Platyhelminthes. Flatworms Flatworms or Platyhelminthes include flukes, tapeworms, and turbellarians. Tapeworms belong to the phylum Platyhelminthes.... So the answer is [(E)]


What are beaks adapted to?
Options:
- (A) principals of aerodynamics
- (B) it keeps an organism warm
- (C) Animal survival
- (D) the environment
- (E) the color of the feathers
- (F) how the bird flies
- (G) food that is scavenged
- (H) the call the bird makes
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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: Bird beaks are generally adapted for the food they eat. Birds eat food that they scavenge. Beaks are adapted for food that is scavenged.... So the answer is [(G)]