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
Travka [436]
2 years ago
14

Please help I don't understand.

Biology
2 answers:
cupoosta [38]2 years ago
7 0

Answer:

False .

atmosphere in early earth was filled with both methane and ammonia

Now days we have nitrogen, oxygen Carbon dioxide and variable gases

Softa [21]2 years ago
5 0

Answer:

False, because the atmosphere is not composed completely of these two gases. Ammonia and methane now make up little to none of the atmosphere.

You might be interested in
What does the word “autonomously” most likely mean as used in paragraph 3
zavuch27 [327]

Answer:

No Paragraphs seen

Explanation:

How can we answer a question from a reading without seeing the text book?

6 0
3 years ago
Which theory is currently accepted as explaining the Moon's creation?
aliya0001 [1]

Explanation:

The giant-impact hypothesis is currently the favored scientific hypothesis for the formation of the Moon. Supporting evidence includes: Earth's spin and the Moon's orbit have similar orientations. Moon samples indicate that the Moon's surface was once molten.

5 0
2 years ago
In your own words define what "Social Darwinism" is. How did this theory allow or promote imperialism?
Yuliya22 [10]
"Social Darwinism<span> is a modern name given to various theories of society that emerged in the United Kingdom, the United States, and Western Europe in the 1870's, and which are claimed to have applied biological concepts of natural selection and survival of the fittest to sociology and politics", so, in therory, it would allow AND promote imperialisim, as many people are not within the same level of society.</span>
7 0
3 years ago
A chemical reaction is a process by which atoms or groups of atoms in substances are
ziro4ka [17]
A chemical reaction is a process by which atoms or groups of atoms in a particular substance are rearranged from the arrangement within the reactants to a new arrangement within the products.
6 0
3 years ago
How do homologous structures show common ancestry?
spin [16.1K]

Answer:

Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations (beneficial features). Similarities and differences among biological molecules (e.g., in the DNA sequence of genes) can be used to determine species' relatedness.

Explanation:

3 0
2 years ago
Other questions:
  • Investigate how changes in an ecosystem affect a food web.
    9·1 answer
  • What type of stress occurs when a rock mass is pushed in opposite directions?
    9·1 answer
  • Which type of molecule that can be found in living things lacks carbon atoms?
    6·2 answers
  • Which manufactures ribosomes?
    13·1 answer
  • As a cell grows, the surface area to volume (SA:V) decreases and the cell must divide or die. The decreased SA:V ratio decreases
    8·2 answers
  • The trachea connects to the pharynx. TrueFalse
    8·2 answers
  • What is the importance of autotrophic organisms for other organisms?
    13·1 answer
  • Compare the number of chromosomes in a body cell to that in a sex cell.
    7·2 answers
  • Beavers build dwellings called lodges. The photo shows one such beaver lodge. Imagine that most of the trees are cut down and re
    6·2 answers
  • PLEASE I NEED HELP WITH THIS SCIENCE HOMEWORK WILL GIVE BRAINLIEST
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!