input with options: Fact 1: Echinoderms lack a centralized nervous system. Fact 2: From animal experiments, it seems to be a central nervous system toxin. Given the two facts above, echinoderms are resistant to some:?
OPTIONS:
- starfish
- enzymes
- Toxicity
- pesticide
- parasites
- toxins
- boats
- chemicals
output: toxins

Q: Fact 1: An aquatic animal requires great amounts of water to survive. Fact 2: Fish can survive in water by using their gills to extract the dissolved oxygen. Given the two facts above, what requires great amounts of water to use their gills to extract dissolved oxygen?

OPTIONS:
- most cephalopods
- alligators
- starfish
- aquatic animals
- Jellyfish
- water foul
- platypus
- Lobsters

A: aquatic animals

input: OPTIONS:
- organ
- ovaries
- colors
- feet
- alleles
- genus
- skull
- Length Now, answer this question: Fact 1: Amphibians are the first true tetrapods, or vertebrates with four limbs. Fact 2: Modern classifications of the tetrapods rely on the structure of the skull . Given the two facts above, what are amphibians classified by?
A:
output: skull

Fact 1: Poison causes harm to living things. Fact 2: Arsenic compounds are poisonous. Given the two facts above, what can cause harm to living things?

OPTIONS:
- bacteria
- cigarettes
- Pesticides
- toxins
- steroids
- amoebae
- leeches
- Arsenic

Answer: Arsenic

Problem: OPTIONS:
- otters
- toads
- plants
- cacti
- seeds
- adaptations
- alpacas
- spores
Q: Fact 1: Plants that are adapted to very dry environments are called xerophytes. Fact 2: Bromeliads and cacti are xerophytes. Given the two facts above, what are adapted to very dry environments?
Answer: cacti

Fact 1: Cutting down trees has a negative impact on an ecosystem. Fact 2: Plants include trees. Given the two facts above, doing what to plants has a negative impact on the ecosystem?

OPTIONS:
- planting them
- deforestation
- cutting them down
- Pesticides
- watering them
- massive damage
- sitting under them
- Abnormal cell growth

Answer:
cutting them down