input: OPTIONS:
- fish
- graptolites
- starfish
- waste
- humans
- barnacles
- insects
- ferns Now, answer this question: Fact 1: Echinoderms lack respiratory and excretory systems. Fact 2: Starfish and sea urchins are also echinoderms. Given the two facts above, what lack respiratory and excretory systems?
A:
output: starfish

Fact 1: Ozone depletion results in higher levels of UV radiation reaching Earth. Fact 2: If there is an increase in UV radiation, the risks go up for all types of skin cancer. Given the two facts above, the risks of all types of skin cancer increases with increasing?

OPTIONS:
- oxygen debt
- rays or beams
- electromagnetic energy
- scattered light
- temperature
- shadow boxing
- ozone depletion
- redshift

Answer: ozone depletion

Problem: OPTIONS:
- huddle together
- sound
- interact
- Vibrates
- wave in air
- during the day
- Decibels
- Pheromones
Q: Fact 1: Echinoderms use pheromones to communicate with each other. Fact 2: Modern echinoderms include starfish and sea urchins. Given the two facts above, how do starfish communicate?
Answer: Pheromones

Problem:OPTIONS:
- Absorb light
- scarce resources
- Chlorophyll
- tiny polyps
- to stay warm
- animals
- salt and water.
- graptolites

Fact 1: Many corals secrete an exoskeleton that builds up to become a coral reef. Fact 2: Coral is made of the exoskeletons of many thousands of tiny marine animals called polyps. Given the two facts above, coral reefs are made up of the exoskeletons of thousands of what?
****
A: tiny polyps

Fact 1: Exercise has a positive impact on a human 's health. Fact 2: For exercise, moderate exercise such as walking is recommended. Given the two facts above, what is a moderate way to have a positive impact on a human 's health?
OPTIONS:
- Cooking
- walking
- high fat
- Heart rate
- skipping meals
- pollution
- sweating
- food
walking

Fact 1: Scales are used for protection by scaled animals. Fact 2: Pangolins have an elongate and tapering body covered above with overlapping scales. Given the two facts above, what are pangolins covered in?
OPTIONS:
- tunicates
- Echinoids
- shells
- exoskeleton
- blastoids
- barrel-shaped
- protection
- white

Answer:
protection