What should a student do first if they spill a chemical in the lab?
Biology Semester 1 Final Review (Copy)

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•
Biology
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Tell the teacher so they can determine the proper clean-up procedure.
2.
FLASHCARD QUESTION
Front
What is a keystone species?
Back
A species that helps to hold an ecosystem together.
3.
FLASHCARD QUESTION
Front
What does the x-axis typically represent in a graph?
Back
Time.
4.
FLASHCARD QUESTION
Front
What do the arrows in a food chain or web represent?
Back
They show what direction the energy is flowing between organisms.
5.
FLASHCARD QUESTION
Front
What is a controlled variable in an experiment?
Back
A factor that is kept constant to ensure a fair test.
6.
FLASHCARD QUESTION
Front
What is the scientific method?
Back
A systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.
7.
FLASHCARD QUESTION
Front
Define ecosystem.
Back
A community of living organisms and their interactions with their environment.
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