Unit 3 - Earth's Environmental Systems
Flashcard
•
Science
•
10th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the hydrosphere?
Back
The hydrosphere is the sphere of Earth that contains all of its water, including oceans, rivers, lakes, and groundwater.
2.
FLASHCARD QUESTION
Front
What are proteins primarily composed of?
Back
Proteins are mainly composed of carbon, hydrogen, oxygen, and nitrogen.
3.
FLASHCARD QUESTION
Front
What is a negative feedback loop?
Back
A negative feedback loop is a process that counteracts changes in a system, helping to maintain stability.
4.
FLASHCARD QUESTION
Front
What macromolecule provides structural support in cells?
Back
Carbohydrates provide structural support in cells, such as cellulose in plant cell walls.
5.
FLASHCARD QUESTION
Front
Which of the following is NOT a lipid?
Back
Enzymes are not lipids; they are proteins that catalyze biochemical reactions.
6.
FLASHCARD QUESTION
Front
What is the biosphere?
Back
The biosphere is the global sum of all ecosystems, where life exists, including land, water, and the atmosphere.
7.
FLASHCARD QUESTION
Front
Define the lithosphere.
Back
The lithosphere is the rigid outer layer of the Earth, consisting of the crust and upper mantle.
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