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
AlekseyPX
3 years ago
6

Fossils cannot be used to explain changes in the earth.

Biology
1 answer:
Stella [2.4K]3 years ago
3 0

Answer:

f

Explanation:

You might be interested in
How can you distinguish a mixture from a substance based on their boiling point?​
frozen [14]

Answer:

Its based on their physical properties

Explanation:

3 0
3 years ago
Why do scientists use models to study changes to the earth’s surface
Stells [14]
Because it’s time consuming and money consuming to observe from space so models are required
6 0
3 years ago
Which of the following investigators was (were) responsible for the following discovery? In DNA from any species, the amount of
Zarrin [17]

Answer :Erwin Chargaff   a Biochemist

Explanation:

He formulated the base paring of double helix of DNA. He reasoned that since the percentage of four  DNA  bases are of this proportions in human;

                                  Adenine=30.9% and Thymine =29.4%;

                                  Guanine=19.9% and Cytosine =19.8%

Then,  the amount of adenine will always be equal to thymine,

And the amount of Guanine equals to cytosine based on this percentages of distribution.  

(Adenine and Guanine are large, molecule of Purines, while thymine and Cytosine are Pyrimidine)  

 

He concluded (although scientist believed, he did not explicitly stated this) that this should be the base paring patterns in DNA molecule. This is the first Chargaff Rule.

His second rule is that the DNA composition, in the relative amount of the four bases Adenine, Thymine, Cytosine and Guanine varies in proportion from one organisms to another. And this is the basis of molecular diversity.

6 0
3 years ago
One function of gel electrophoresis is to
KonstantinChe [14]
The answer is : A ) separate DNA fragments
6 0
3 years ago
What is the World Distribution of the Temperate grasslands?
Tpy6a [65]
Temperate grasslands are composed of a rich mix of grasses and forbs and underlain by some of the world’s most fertile soils. Since the development of the steel plow most have been converted to agricultural lands.
7 0
3 years ago
Other questions:
  • When is a mineral considered to be an ore
    15·1 answer
  • What type of human inventions contribute to release of CO2 on earth​
    13·1 answer
  • Which type of cell division produces daughter cells that are identical to the original cell?
    12·1 answer
  • How do babies know , it is necessary to drink milk when they get hungry??? Even though their brain is underdevelopment?
    11·2 answers
  • Hello can anyone help on this? Thank you If you can.
    14·1 answer
  • To make the future development more eco-friendly and decrease air pollution, choose one of the following recommendations:
    9·1 answer
  • Which organisms would share the most characteristics?
    6·1 answer
  • Which of the following statements is true of meiosis? (4 points)
    6·1 answer
  • Which country loaded botulism toxins into bombs? Why is botulism of less concern than anthrax or plague?
    9·1 answer
  • g Consider a culture medium such as mannitol salt agar (MSA) on which only gram-positive organisms such as Staphylococcus sp. Co
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!