1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Evgesh-ka [11]
2 years ago
15

Why is it useful to know the background level of extinction?

Chemistry
1 answer:
lawyer [7]2 years ago
5 0

Answer:

NOAA and FWS are required by law to compare background rates to current rates.

Explanation:

You might be interested in
5-Etil-4-4- isobutil -7,7-Dimet nonano
Mazyrski [523]

Answer:

I have no clue what the question is

5 0
2 years ago
How do weather models predict the weather?
strojnjashka [21]

Answer:

<em>Weather forecasters often discuss the models they use to help predict the weather. ... Weather observations (pressure, wind, temperature and moisture) obtained from ground sensors and weather satellites are fed into these equations. The observations are brought into the models in a process known as data assimilation.</em>

Explanation:

<h2><em>I </em><em>hope</em><em> this</em><em> helps</em><em>!</em></h2>
4 0
2 years ago
High temperature refrigeration is that produced by ____. A. heat from a furnace B. an air-conditioning system C. the vegetable c
seropon [69]

Answer:

B. an air-conditioning system.

Explanation:

Refrigeration is defined as a process of cooling a system to lower temperature below the surrounding temperature while the removed heat is rejected at higher temperatures.

Heat pumps use the heat output of the refrigeration process, which may also be designed to be reversible, but are otherwise similar to air conditioning units.

4 0
3 years ago
What are three areas are the natural sciences commonly divided
Sonbull [250]
Today, natural sciences<span> are more </span>commonly divided<span> into life </span>sciences<span>, such as botany and zoology; and physical </span>sciences<span>, which include physics, chemistry, geology, astronomy and materials </span>science<span>.</span>
5 0
3 years ago
The rate of effusion of an unknown gas was measured and found to be 11.9 mL/min. Under identical conditions, the rate of effusio
iren2701 [21]

Answer : The correct option is, (B) CO_2

Solution :

According to the Graham's law, the rate of effusion of gas is inversely proportional to the square root of the molar mass of gas.

R\propto \sqrt{\frac{1}{M}}

or,

(\frac{R_1}{R_2})=\sqrt{\frac{M_2}{M_1}}       ..........(1)

where,

R_1 = rate of effusion of unknown gas = 11.9\text{ mL }min^{-1}

R_2 = rate of effusion of oxygen gas = 14.0\text{ mL }min^{-1}

M_1 = molar mass of unknown gas  = ?

M_2 = molar mass of oxygen gas = 32 g/mole

Now put all the given values in the above formula 1, we get:

(\frac{11.9\text{ mL }min^{-1}}{14.0\text{ mL }min^{-1}})=\sqrt{\frac{32g/mole}{M_1}}

M_1=44.2g/mole

The unknown gas could be carbon dioxide (CO_2) that has approximately 44 g/mole of molar mass.

Thus, the unknown gas could be carbon dioxide (CO_2)

5 0
3 years ago
Other questions:
  • A cylindrical specimen of some metal alloy having an elastic modulus of 126 GPa and an original cross-sectional diameter of 3.4
    6·1 answer
  • A microscope containing two or more lenses is an
    6·1 answer
  • Sodium has the atomic number 11. How many electrons are in a sodium ion, which has the symbol Na=?
    10·1 answer
  • How and why do ionic bonds form?
    13·1 answer
  • HELP ASAP GIVING BRAINLIEST!
    13·1 answer
  • Please helpppppppppp
    12·2 answers
  • What is Proportional to the energy of electromagnetic wave
    8·1 answer
  • The half-life of thorium-227 is 18.72 days. How many days are required for three-fourths of a given amount to decay?
    5·1 answer
  • 7<br>State two signification of melting?​
    5·1 answer
  • Which step you should take before performing a scientific investigation
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!