If all vertebrates have jaws, then what do all vertebrates have? Answer choices: - Birds - fat - gills - bones - jaws - muscle - scales - diseases
jaws

If sleep has a positive impact on health, then what has a positive impact on health? Answer choices: - viruses - playing - tuna - squids - cancer - sleep - poison - running
sleep

Q: If bacteria feed plants, then what feeds plants? Answer choices: - animals - insects - virus - bacteria - coal - bees - cells - sugar
A: bacteria

Question: If animals may use vocal chords to communicate, then what use may some animals have for their vocal chords? Answer choices: - support - chiming - exoskeleton - courtship - circulatory systems - reading music - writing - communication
Answer: communication

*Question*
If changing occurs by a process called natural selection, then changing in animals occurs by a process called what? Answer choices: - world climate change - It helps them survive - natural selection - Leptospirosis - ozone - relocation - permineralization - animal growth
**Answer**
natural selection

(Question)
If agraduated cyliner measures in liters, then which unit could a graduated cylinder measure in? Answer choices: - salinity - Grams - Liters - Centimeters - Dilution - solutes - Amperes - two
(Answer)
Liters