Problem: OPTIONS:
- harm them
- stink up
- make up
- recovery
- recycling
- eat up
- poop up
- store
Q: Fact 1: Organs of excretion make up the excretory system. Fact 2: All organisms excrete wastes. Given the two facts above, organs of waste do what to the waste system?
Answer: make up
Problem: OPTIONS:
- Sulfur dioxide
- burning coal
- Medical treatment
- treats
- Good feelings
- cigarettes
- competition
- emissions
Q: Fact 1: Competition may lead to aggressive behaviors or displays of aggression. Fact 2: Aggression is the desire or intent to cause harm. Given the two facts above, what can cause harm?
Answer: competition
Problem: OPTIONS:
- fish
- graptolites
- starfish
- waste
- humans
- barnacles
- insects
- ferns
Q: 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?
Answer:
starfish