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
Reptile [31]
2 years ago
12

Why was natural selection an important contribution to the theory of evolution?

Biology
1 answer:
BartSMP [9]2 years ago
5 0

Darwin's theory. In 1859, Charles Darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. He defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".



You might be interested in
Repressors are transcription factors that bind to _____________sequences in dna
Trava [24]

Answer:

The given blank can be filled with operator.

Explanation:

The proteins that assist in turning on or turning off the function of a specific gene by getting combined with certain sections of the DNA are known as transcription factors. The transcription factors that activate the transcription of a specific gene are known as activators, while that prevents transcription and is termed as repressors.  

A repressor can be an RNA or a DNA binding protein, which prevents the articulation of genes by getting combined with the operator. A repressor, which binds with DNA prevents RNA polymerase from getting combined with the promoter, which further inhibits the transcription of the genes into mRNA.  

6 0
3 years ago
What stage occurs after cytokinesis
Nostrana [21]
The G1 phase is a period in the cell cycle during interphase that happens after cytokinesis.
8 0
3 years ago
Read 2 more answers
How much energy is available at the tertiary level? The producer level is 1325 J.
ivanzaharov [21]

Answer:

Explanation:

producer

6 0
2 years ago
Read 2 more answers
Iron reacts with atmospheric oxygen to form iron oxide or ferric oxide. Look at the chemical equation for this reaction: Fe + O2
Ber [7]

ANSWER

The correct answer is A

<u>EXPLANATION</u>

From the equation Fe + O_2 \rightarrow Fe_2O_3


<u>L.H.S.</u>               


Fe = 1                        

O  =2      

                 

<u> R.H.S</u>

Fe =2


O  =3

Now, let try to balance the oxygen atoms first,

To do this, we know the Least Common Multiples of 2 and 3 is 6


To get 6 atoms of oxygen at L.H.S  multiply 2 by 3 and on the R.H.S, multiply 3 by 2



L.H.S.                        

O=2\times3=6      


R.H.S

O=3\times2=6  


This means that, 3 should be in front of O_2 at the L.H.S and 2 should come before Fe_2O_3 in the R.H.S of the equation


Now, we have


L.H.S.                        


Fe = 1                          

O  =  6                        

<u>R.H.S</u>

Fe =4

O  =6

The equation is still not balanced since Fe is not balance

 

The Least Common Multiple of  1 and 4 is 4

Which means that we need to multiply 1 by 4 at the L.H.S and 4 by 1 at the R.H.S



L.H.S.                        

Fe=1\times4=4      


R.H.S

Fe=4\times1=4  


We now, have



<u>L.H.S.   </u>                    

Fe= 4                          

O=6                        


<u>R.H.S</u>

Fe =4

O=6

Hence the balanced equation is

4Fe +3O_2\rightarrow 2Fe_2O_3




5 0
3 years ago
Read 2 more answers
Which is a component of a phospholipid
hichkok12 [17]

Answer:

Phospholipids consist of a glycerol molecule, two fatty acids, and a phosphate group that is modified by an alcohol.

Explanation:

these are the key points of the phospholipids

hope this helps :)

6 0
3 years ago
Other questions:
  • What quantity can you tell you whether a solution is acid or basic
    6·1 answer
  • Fluid inside the cell is called what?
    12·1 answer
  • Chromatin or chromosomes are duplicated during: G2 phase S phase prophase G1 phase
    5·1 answer
  • Is it true or false
    5·2 answers
  • Outline one theraputic use of stem cells
    14·1 answer
  • Why is a sidereal day shorter than a solar day on earth?
    10·1 answer
  • Which sign is NOT for a chemical change? Color change or Change in volume or
    5·2 answers
  • Macromolecules are made of smaller subunits called monomers. These large molecules are also broken down into their respective mo
    10·1 answer
  • Herbivores are also called _________________________.
    9·2 answers
  • The prompt contains several characteristics of cell transport. Which of these applies to facilitated diffusion?.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!