Plant ecologists and NASA scientists are working together to develop ________ for space travel that use plants to recycle carbon dioxide and produce oxygen.
A) chemical carbon dioxide scrubbers
B) open pond systems
C) methane generators
D) closed systems
E) water purification systems
Correct Answer:
Verified
Q6: The objective of scientific research is described
Q7: Which sequence generally describes the steps of
Q8: Which of the following scientists would more
Q9: _ is the scientific investigation of the
Q10: The early scientist who first demonstrated experimentally
Q12: If a catastrophe destroyed all green plants
Q13: The science that deals with the form,
Q14: According to the scientific method, an hypothesis
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Q16: An experiment to test an hypothesis
A) should
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