Q: The energy of a photon is directly proportional to the frequency of the electromagnetic what? Choices: - evaporation - convection - absorption - radiation A:
radiation

(Question)
Q: What do willow trees produce to kill bacteria? Choices: - facultative acid - Posion - bacterial acid - salicylic acid A:
(Answer)
salicylic acid

Ques: Q: How many oxygen ions make up an ozone molecule? Choices: - eight - one - five - three A:
Ans: three

(Q).
Q: What are the structural and functional units of the nervous system, which transmit nerve impulses to other cells? Choices: - axions - ions - electrons - neurons A:
(A).
neurons

Ques:Q: An experiment generates what to support a hypothesis? Choices: - falsehoods - reason - study - evidence A:

Ans:evidence

Q: Compounds like sodium chloride form structures called what? Choices: - ions - microorganisms - hydrocarbons - crystals A:
crystals