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Andreyy89
3 years ago
6

Why is the grass green? Why is the sky blue? How does a bird fly? We know the answers to these questions because scientists use

scientific methods to understand the natural world. What methods do scientists use to investigate these natural world questions?
A) research
B) observation
C) experimentation
D) research, observation, and experimentation
This is in Usatestprep.
science
Biology
2 answers:
ollegr [7]3 years ago
7 0

Answer:

bruh imagine- period 8 lolllll

Explanation:

tehe

Anna71 [15]3 years ago
3 0

Answer:

b

Explanation:

they see/observe the sky and the grass

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