Q: If lack of saliva hinders the break down of food into components the body can absorb, then lack of which of the following can hinder the break down of food in the body? Answer choices: - acid rain - water - salt - Weight - chemicals - recycling - sun - saliva
A: saliva

Q: If bacteria can cause disease, then what can cause disease? Answer choices: - bacteria - medicine - healthcare - Pesticides - viruses - influenza - toxins - fish
A: bacteria

Q: If thirst is used to make an animal realize that it needs to replenish H2O in its body, then thirst shows an animal that it needs what? Answer choices: - CO2 - H2O - He - food - feed - urea - O2 - H20
A: H2O

Q: If nuclear reactions in stars causes stars to produce energy, then what do nuclear reactions in stars cause? Answer choices: - heat energy - Change colors - production of energy - hydrogen and oxygen - only black holes - destruction of energy - creation of life - harmful substances
A: production of energy