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
Brut [27]
4 years ago
8

Que es la contaminacion del aire

Biology
1 answer:
Maksim231197 [3]4 years ago
7 0
<span>la presencia o introducción en el aire de una sustancia que tiene efectos nocivos o tóxicos.
the presence in or introduction into the air of a substance which has harmful or poisonous effects.
</span>
You might be interested in
The limiting factor of aquatic ecosystem is
Setler [38]

sus pricipales factores limitantes son la disponibilidad de luz solar y la concentración de oxígeno disuelto y nutrientes en el agua

4 0
3 years ago
Read 2 more answers
Gene therapy involves the transplantation of normal genes into a genome in place of missing or defective genes. Many scientists
antoniya [11.8K]
The therapy can find the damaged cancer cells and prevent it from reproducing, or even taking it off the gene so that none person from the next generations will suffer the same.
7 0
3 years ago
Read 2 more answers
Match each statement with a layer of the atmosphere. There will be two statements for each layer.
Nat2105 [25]

<span>The troposphere layer can have thunderstorms or clear, sunny skies. The biosphere interacts most with this layer. </span>

The stratosphere is the second layer from Earth's surface. Winds are strong and steady in this layer. <span>
</span>

The mesosphere is heated by the ozone layer beneath it. This layer is where most meteor showers occur. 

The thermosphere contains the ionosphere and exosphere. It contains layers of single, unmixed gas. 

<span>
</span>
3 0
3 years ago
In plants, meristematic cells are most similar to which type of cells in animal<br> tissues?
Vinvika [58]

Stem cells of the animals are the most similar to the meristematic cells of the plant.

<u>Explanation:</u>

  • Meristematic cells are the most important cells for the plant which give rise to the various tissues and plant organs. These meristematic cells are capable to undergo cell division and they are called totipotent.  
  • The stem cells of animals and humans are capable of doing the function by replacing the new cells for growth and development.
  • The difference among these two tissues is that meristematic is capable to produce total organs whereas stem cells are capable to produce only specific tissues.
4 0
3 years ago
What rule is used to join the free nucleotides to the exposed bases of the DNA?
Black_prince [1.1K]
The complimentary base-pair rule. I hope I helped!
7 0
3 years ago
Other questions:
  • Which of the following statements is true about the lithium and the helium atoms?
    12·2 answers
  • What is the responsibility of a scientist?
    7·2 answers
  • The phospholipid molecule has two parts, the polar end and the bipolar end. True or False?
    9·1 answer
  • Viral STIs are not curable and can only be controlled with medications.<br> a. True<br> b. False
    5·2 answers
  • In a one-trait testcross, the phenotype that disappears in the f1 generation of a homozygous dominant and homozygous recessive c
    5·2 answers
  • Igneous rocks that contain many dark silicate minerals, and that also are rich in magnesium and iron, have a composition that is
    9·2 answers
  • Which of the following statements does not highlight a difference in eukaryotic and prokaryotic translation?
    10·1 answer
  • _________ is used by ecologists to describe the community interaction where one organism makes the environment more suitable for
    6·1 answer
  • Are the cells pictured below plant or animal cells?<br><br><br><br> a<br> Plant<br> b<br> Animal
    15·1 answer
  • True or false: a noncontact force is exerted directy on an object
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!