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
barxatty [35]
3 years ago
15

What does the typical mixture of air on earth composed of

Biology
1 answer:
Tju [1.3M]3 years ago
6 0

Earth's atmosphere is composed of air. Air is a mixture of gases, 78% nitrogen and 21% oxygen with traces of water vapor, carbon dioxide, argon, and various other components.

You might be interested in
In august 2010, the asian clam was discovered in lake george. it is not native to that area. a single clam can reproduce and rel
vekshin1
The introduction of the Asian Clam in Lake George is an example of an Invasive Species.

Asian Clam are small in size, hardly 1.5 inches long. However, they can reproduce very quickly without the need for a partner. A single clam can give birth to hundreds of offspring in a single day without a mate.

Asian Clam is extremely unpleasant for most fresh water bodies since it excretes nutrients such as nitrogen.

This helps in the development of algae and gives off a foul stink.
8 0
3 years ago
Deleted question this way because of no other method
never [62]

Answer:

nice.....................

Explanation:

yes

4 0
3 years ago
What evidence indicates that all eukaryotes share common ancestry?
Effectus [21]
I also believe the answer is A.
4 0
2 years ago
In a chemical reaction, atoms are rearranged to form new molecules. However, atoms are neither created nor destroyed.
lozanna [386]

Answer:

D.

Explanation:

It will stay the same no matter how the atoms are rearranged

7 0
3 years ago
Read 2 more answers
Which mutations is most likely to cause a phenotypic change?
melomori [17]

The question is incomplete. The complete question is as follows:

Which of the following mutations is most likely to cause a phenotypic change?

A) a duplication of all or most introns

B) a large inversion whose ends are each in intergenic regions

C) a nucleotide substitution in an exon coding for a transmembrane domain

D) a single nucleotide deletion in an exon coding for an active site

E) a frameshift mutation one codon away from the 3' end of the nontemplate strand

Answer: D) a single nucleotide deletion in an exon coding for an active site

Explanation:

Deletion or insertion of a single nucleotide in an axon coding for an active site is called frameshift mutation.

The sequence of codons is read during translation, in order to synthesize a amino acids chain and form a protein from the nucleotide sequence. Frameshift mutations occur when the usual codon sequence is broken by the deletion or addition of one or more nucleotides. For example, if only one nucleotide is removed from the axon sequence during the RNA splicing process, then there will be a disrupted reading frame for all codons before and after the mutation. This may result in several incorrect amino acids being introduced into the protein. Disruption in protein sequence will cause phenotypic change.

Hence, the correct option is D) a single nucleotide deletion in an exon coding for an active site .

5 0
3 years ago
Other questions:
  • Please Help I'll give brainliest!!!!!!!!!!
    8·1 answer
  • The earth's plates moved over millions of years, bringing continents and other features of the earth to their present arrangemen
    15·1 answer
  • 2. Which of the following synonyms for cried has the most negative nuance?
    6·2 answers
  • Select all of the answers that apply. Which of the following are possible causes of mass extinctions that scientists have identi
    7·2 answers
  • How long can humans hold their breath underwater?
    9·1 answer
  • I need help with this waves assessment!!!
    11·2 answers
  • Where are most of the ATP molecules produced in aerobic respiration?
    13·1 answer
  • Healthy individuals of Paramecium bursaria contain photosynthetic algal endosymbionts of the genus Chlorella. When within their
    15·1 answer
  • Fill in the box with correct one?<br><br> Quick help please
    5·1 answer
  • 1. what are the 3 points of dimensions? <br>2. Define health<br>3. What is Mental dimension??​
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!