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Levart [38]
3 years ago
8

The EPA scientist measures the pH level in one area of a river to be lower than normal and writes that a pollutant must have bee

n discharged from a factory just upstream. This is an example of
Chemistry
2 answers:
shutvik [7]3 years ago
4 0
Its an example of inference. 
HACTEHA [7]3 years ago
3 0

Answer:

INFERENCE.

next question answer:

A LINE GRAPH.

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Group viia elements are very active non metals give reason​
Marianna [84]

Answer:

because they need only one electron

4 0
3 years ago
Which of the following best defines velocity?
Lina20 [59]

Answer: D

Explanation:

Because velocity is speed

8 0
3 years ago
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What is 30-9x2*2-21-4+4
IgorC [24]
Answer:
9 (1-2x²)

Explanation:
The given expression is:
30 - 9x²*2 - 21 - 4 + 4
The first step is to compute the multiplication. This will give:
30 - 18x² - 21 - 4 + 4
Then, we will add like terms as follows:
(30-21-4+4) - 18x²
= 9 - 18x²
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Hope this helps :)

5 0
3 years ago
What is the answer to it
mr_godi [17]
what is the answer to what there is nothing here
8 0
3 years ago
Is it possible to transfer heat from a cold reservoir to a hot reservoir?
tankabanditka [31]

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Thermal conductuction is the transfer of heat through physical contact. Thermal conduction is the transfer of heat by microscopic collisions of particles. Heat spontaneously flows from a hotter to a colder body.

The process of heat conduction depends on four basic factors: the temperature gradient, the cross section of the materials involved, their path length and the properties of those materials.

8 0
3 years ago
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