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
Lady_Fox [76]
3 years ago
9

Select the correct answer.

Biology
2 answers:
riadik2000 [5.3K]3 years ago
8 0

Answer:

Answer is B.

nitrogen (78.10%), oxygen (20.90%) - this combination of gases dominate the Earth’s atmosphere.

Explanation:

The atmosphere of earth is a gaseous layer which surrounds the earth. It  protects the life on earth by absorbing harmful ultraviolet radiation, reducing temperature extremes, maintaining the existence of  liquid water on the earth's surface and warming the surface. The atmosphere consists of many gases including some pollutants and greenhouse gases. Nitrogen is the gas present in the atmosphere most abundantly while Oxygen and Argon take the second and third place. Atmosphere contains approximately 78% of nitrogen , 21% of oxygen and 0.9% of argon. Gases like carbon dioxide, nitrous oxides, methane, ozone and the water vapor constitutes the rest of the atmosphere. Many small particles called aerosols are also there which include dust, spores, pollen, volcanic ash, smoke etc. There are five layers of atmosphere. Troposphere (0 to 12 km) where we live is the lowest layer of earth's atmosphere ,which is closest to the earth's surface contains half of the atmosphere. Here most clouds are found and almost all weather occurs. Stratosphere (12 to 50 km) is the second layer where jet aircraft and weather balloons fly. It contains the ozone layer that absorbs harmful radiation from the sun.  Mesosphere (50 to 80 km) is the third highest layer and the coldest part of the atmosphere where most meteors burn up upon entering in to the atmosphere. The fourth layer is thermosphere (80 to 700 km) where the International Space Station orbits earth and the space shuttles flew. Exosphere (700 to 10,000 km) is the outermost layer where the atmosphere merges into outer space. Most of the satellites orbiting earth are found here.

jolli1 [7]3 years ago
3 0

Answer:

nitrogen (78.10%), oxygen (20.90%)

Explanation:

100%

You might be interested in
Adaptation by natural selection is the process that allows individuals to adapt to their environments.
jarptica [38.1K]
The answer is true. Adaptation allows for a better chance of survival.
Hope this helps!
4 0
3 years ago
What is a hypotheses
Luden [163]

Answer:

An educated guess before doing an experiment

3 0
3 years ago
Read 2 more answers
Liverworts, mosses and hornworts are non-vascular plants that reproduce by forming
Galina-37 [17]
Hey there!

What you're looking for is spores.
Liverworts, mosses, and hornworts are non-vascular plants the reproduce by forming spores. They are basically little cells that multiply in order to reproduce.

I hope this helps! (:
3 0
3 years ago
Read 2 more answers
How do organisms use oxygen
murzikaleks [220]

Organisms that use oxygen need it for cellular respiration, in which energy is released from glucose. Energy is needed by the organism for growth, mobility and reproduction.

4 0
3 years ago
Read 2 more answers
Guys random question but do you guys think I could build a good physique I am only 13 and have barely touches a weight in my lif
NikAS [45]

Answer:

since for some reason I cant delete my answer I'm going to edit it.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Can my dog go outside after being neutered
    8·1 answer
  • Widows peak is dominant to no widows peak. Determine the genotype and phenotype ratios for a homozygous dominant female and a ho
    8·1 answer
  • Which protein is predicted to be most resistant to denaturation by heat? a protein with many internal disulfide bonds a protein
    12·1 answer
  • Which two characteristics describe all animals?
    6·2 answers
  • What is the probability of producing a white rose when a red rose is crossed with a pink rose?
    14·1 answer
  • Leeuwenhoek was not a
    8·1 answer
  • What is a signal molocule
    12·1 answer
  • I need help can someone help me it is a weather question
    6·2 answers
  • What is the correct answer?
    12·1 answer
  • A. Draw a food chain that could exist in your ecosystem.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!