Q: The number of particles of a substance in a given volume is known as? Choices: - frequency - range - mass - concentration A:
concentration

(Question)
Q: What are the lines of force in the electric field around a charged particle called? Choices: - terrain lines - voltage lines - ionic zone - field lines A:
(Answer)
field lines

Ques: Q: Metabolism is the collection of what that occur in an organism? Choices: - mechanical reactions - growth reactions - mineral reactions - chemical reactions A:
Ans: chemical reactions

(Q).
Q: Most reptile eggs can be laid on land, not in water and they are called what? Choices: - aqueous - umbilical - Transitional - amniotic A:
(A).
amniotic

Ques:Q: The way in which the sun produces light is called what? Choices: - tumescence - rays - photosynthesis - incandescence A:

Ans:incandescence

Q: Birds have evolved a respiratory system that enables them to fly. flying is a high-energy process and requires a lot of this? Choices: - weight - nitrogen - adaptation - oxygen A:
oxygen