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3 years ago

The pond behind Serge's house, with all the living and non-living parts, is an example of a(n)

Biology

2 answers:

kari74 [83]3 years ago

8 0

B) Ecosystem - which includes the living communities and nonliving factors in an environment

d1i1m1o1n [39]3 years ago

5 0

It's an example of an ecosystem, so B.

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Evaporation of the liquid

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The circulatory system helps maintian homeostasis by interacting with the

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2 years ago

What is the pH if 20 mL of pH = 2 solution is diluted to a final volume of 600 mL?

Mashutka [201]

Explanation:

Hydrogen atoms contain 1 proton and 1 electron while being devoid of neutrons. When they lose their electron they form an ion or H+, a particle carrying a unit of positive charge. pH measures how basic or acidic a water-based solutions are, with a formula for pH is

pH = -log[H+].

...where pH is -base 10 log of the concentration of hydrogen ions within the solution.

Initial volume= 20 mL

Final volume= 600 mL

# of dilutions= $\frac{600}{20}$ = 30

for a pH 2= [H+]= $10^{=2}$

∴ [H+]= $\frac{10^{-2}}{30} = 3.333 * 10^{-4}$

and pH is an antilog of [H+]= - log $\frac{10^{-2}}{30} = 3.333 * 10^{-4}$

∴pH = 3.47

Learn more about pH at brainly.com/question/4981491

Learn more about pKA at brainly.com/question/11062486

#LearnWithBrainly

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3 years ago

The material in the nucleus involved in inheritance??

Agata [3.3K]

The answer is chromosome ....

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3 years ago

How might pyrogens cause the body temperature to rise

Natasha2012 [34]

Answer:

Pyrogens are substances which, when injected into the mammalian body, will cause a variety of symptoms, the most recognisable of which is an increase in core body temperature.

Explanation:

The body is able to regulate temperature in response to signals from the nervous system. When bacteria are destroyed by leuckocytes, pyrogens are released into the blood. Pyrogens reset the body's thermostat to a higher temperature, resulting in fever.

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3 years ago