(Question)
Q: The greenhouse effect on earth is caused by an increase in what in the atmosphere? Choices: - phosphorous - vapor - satellites - carbon A:
(Answer)
carbon

(Question)
Q: Dermal, vascular, and ground tissue make up what part of a plant, which bears the leaves, flowers and fruits? Choices: - root - flowers - leaves - stem A:
(Answer)
stem

(Question)
Q: A current in a circuit needs a complete what? Choices: - cause - speed - stream - path A:
(Answer)
path