Q: What is the term for a substance that increases the rate of a chemical reaction but is not changed or used up in the reaction? Choices: - a mechanism - an acid - a contribute - a catalyst A:
a catalyst

(Question)
Q: Insects have a highly specialized type of respiratory system called what? Choices: - nasal system - gland system - grunion system - tracheal system A:
(Answer)
tracheal system

Ques: Q: What are oil in folded layers of rock called? Choices: - oscillations - dendrites - macroparticle - anticlines A:
Ans: anticlines

(Q).
Q: What is the primary component of steel alloys? Choices: - carbon - titanium - alluminum - iron A:
(A).
iron

Ques:Q: What do we call the movement of individuals into a population from other areas? Choices: - pilgrimage - nomadic - assimilation - immigration A:

Ans:immigration

Q: What is the term for water that falls from clouds? Choices: - lightning - atmosphere - wind - precipitation A:
precipitation