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Bas_tet [7]
3 years ago
9

A scientist performs an experiment to see how plants respond to acid rain. He places the water plants in water of varying pH mea

surements. The pH levels are 2.5, 6.0, 7.0, and 9.0. Each day, he measures the health of the plants by counting the number of leaves on the plant. The plants used in this experiment typically grow in water at a neutral pH.
Why was only one variable tested in this experiment?

The scientist tested one variable to determine what caused the number of leaves to change.
It just happened that way; you can test as many variables as you want.
The scientist ran out of materials so he tested only one variable.
The scientist tested two variables.
Biology
1 answer:
krok68 [10]3 years ago
3 0

Answer:

The scientist tested one variable to determine what caused the number of leaves to change.

Explanation:

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What is the Marcellus Shale, and why is it so important to ancient ocean life?
Natalija [7]

The Marcellus Shale also categorized as the Marcellus formation is a marine sedimentary rock unit of middle Devonian age found in eastern North America. It elongates throughout the major of the Appalachian Basin.  

The shale comprises huge unexploited reserves of natural gas, which makes it an attractive target for export and energy development. There are comparatively scarce presences of fossilized marine fauna found in the Marcellus, however, these fossils are still essential to paleontology.  

For example, the Marcellus comprises the primogenital known varied assemblage of thin-shelled mollusks, still possessing well-preserved shell microcomposition. It is also where goniatite, an extinct shelled swimmer identical to a squid, make their initial presence in the fossil record.  


8 0
4 years ago
Dr. George wants Mrs. Kim to have Ambien 5mg, one tablet by mouth at bedtime. May refill three times.
abruzzese [7]

Explanation:

<em />

<em>Rx:  </em>Ambien  5mg   # 10 (ten)

Sig: Ambien 5 mg PO HS for sleep PRN

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These abbreviations mean:

PO- the oral route for medication (per os)

HS- a patient's bedtime (hour of sleep)

PRN- as necessary or needed (pro re nata)

Further Explanation:

Ambien belongs to a drug class of sedative-hypnotics; in the brain, it causes calming effects -users fall asleep more quickly for a full night's rest. It is used in the treatment of insomnia in adults who have problems getting to sleep and staying asleep. However,<u> treatment is typically only carried out for 1-2 weeks at a time.</u>

Learn more about prescriptions at brainly.com/question/2749176

#LearnWithBrainly

6 0
3 years ago
What are eosinophils?​
AleksandrR [38]

Answer:

A normal type of white blood cell that has coarse granules within its cytoplasm.

4 0
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MULTIPLE CHOICE:
Ugo [173]

Answer:

A

Explanation:

The answer should be A because respiration is a chemical process

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When enough energy is consumed, but not enough protein is consumed over a long period of time, ____________ is the condition tha
viva [34]
Low blood cells is the answer that I have I got this right when this was my question hope this helps!!
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