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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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It means that from time to time, organisms change in form and function

Explanation:

As organisms live, they change and develop/mutate into better, stronger, and more functional creatures. This is in addition, because of the cells in the body.

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What structures are included in the level or organization called cells?
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Why do you need a minimum of three Seismic stations to determine the location of an epicenter
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2 years ago
Gerard lives in a tropical region where the average annual temperature is 77°F and the average annual rainfall is more than 100
weqwewe [10]

Answer:

insulated gloves

Explanation:

Answer options:

  • umbrellas
  • insulated gloves
  • raincoats
  • rubber boots

Explanation:

  • The temperature of the region is 77°F which is equal to 25°C.
  • 25°C is not harmful temperature for human skin.
  • The rainfall in the area is enough for the record of data of raincoats, umbrella and rubber boots.
  • So, insulated gloves is the answer.
8 0
3 years ago
Which nitrogen bases are complementary to each other?
Slav-nsk [51]
Adenine (A) binds with Thymine (T).
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Adenine and Guanine are purines. Thymine and Cytosine are pyrimidines.

Hope this helps !

Photon
3 0
3 years ago
Read 2 more answers
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