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
Romashka-Z-Leto [24]
3 years ago
13

Dentre as alternativas a seguir,a única que é uma mistura é: ( )Um átomo de oxigenio ( )Àgua destilada ( )O ar atmosférico ( )O

gás ozoio me ajudem por favor...
Biology
1 answer:
riadik2000 [5.3K]3 years ago
7 0

Answer:

Atmospheric air  

Explanation:

Atmospheric air is a mixture of nitrogen, oxygen, argon, and small amounts of other gases.

A is wrong. A flask of oxygen atoms has nothing else in it. The O atoms are a pure substance.

B is wrong. A flask of distilled water contains only water. The water is a pure substance.

D is wrong. A flask of ozone contains only ozone. Ozone is a pure substance,

You might be interested in
Certain foraminifera (shelled protozoa) have inconsistent fossil records. Which mode of evolution do they represent?
Savatey [412]
The answer is punctuated  equilibrium

4 0
3 years ago
Which of the following processes does not involve transferring carbon from the living environment to the nonliving environment.
Varvara68 [4.7K]
Photosynthesis 
the equation is- Carbon dioxide + water = oxygen + glucose 
6 0
2 years ago
Please help tyyyyy :)
rosijanka [135]

Answer:

Hard

Explanation:

it is hard because these are usually hard parts of an organism including shells, bones, teeth, woody trunk, stems, and branches.

3 0
2 years ago
The world’s first national park established in 1872 was __________.
Andre45 [30]

Answer:

Yellowstone

Explanation:

<em><u>Yellowstone</u></em><em><u> </u></em><em><u>National</u></em><em><u> </u></em><em><u>Park</u></em><em><u> </u></em> was the first national park established in 1872..

I hope I helped, anyways, I hope you have an amazing day

6 0
3 years ago
Read 2 more answers
Blood leaves the left ventricle through the vessel known as:
tatyana61 [14]
D aorta is the answer
7 0
2 years ago
Other questions:
  • What helps an earthworm dig through the soil and where is this located?
    11·1 answer
  • Define: Surface tension
    9·1 answer
  • Brine shrimp live in salt water, but the level of salt in the water where they reside can differ dramatically from day to day or
    10·1 answer
  • Which of the following statements about the role of the respiratory system in maintenance of blood pH is not true?Select one:
    14·1 answer
  • What is 4 in 5 which is following false?
    7·1 answer
  • What is the length of a 0.2-mm object expressed in je m?
    6·1 answer
  • Suppose a bacterium has the ability to utilize sucrose (a disaccharide) as a carbohydrate source on an as needed basis when gluc
    9·1 answer
  • Can someone answer: A very bright, young galaxy with a giant black hole in the center is called a ______________?
    9·2 answers
  • 8. Which of the following are functions of external regulators of the cell cycle?
    9·1 answer
  • How do coral reefs help with climate stability?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!