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
Molodets [167]
3 years ago
13

]The theories on the origin and expansion of the universe have changed from time to time. Which of these best explains why the t

heories about the universe change over a period of time?
new scientific investigations lead to new theories
modern scientists reject old theories in every century
the universe evolves constantly and requires new theories to describe it
the discoveries of all scientists in different centuries have to be incorporated
Biology
2 answers:
stepladder [879]3 years ago
7 0

Answer:

Option A

Explanation:

New scientific investigation about universe always comes up with new theories. This happens because of two reasons -  

a) The exact knowledge of universal phenomenon is not known which lead to continuous investigation and hence new laws come up every time when a study or research is done

b) Also some scientist believes that universe is continuously expanding and changing due to which our previous theories no longer fit the current observations.  

Hence, option A is correct

alisha [4.7K]3 years ago
6 0
I would say the answer is A
You might be interested in
The diagram below shows the same model of the greenhouse effect... Which process is NOT AFFECTED by the amount of greenhouse gas
grigory [225]

Answer:

None of them, they are all affected

5 0
3 years ago
Read 2 more answers
What types of materials are expelled from cells during exocytosis?
alex41 [277]

Large molecules such as hormones materials are expelled from cells during exocytosis

<u>Explanation:</u>

The materials inside the cells are transferred to the outside of the cell and this manner is termed as  Exocytosis. This method is termed as a kind of active transport since it needs energy for this transformation process. One of the major purposes of this process is to discharge trash matters like hormones and proteins.

For a cell to cell transmission and chemical signal messaging these methods are essential. Proteins that are newly generated are transferred to the peak of the plasma membrane by exocytosis. There are three general pathways of exocytosis.

5 0
3 years ago
Asexual reproduction creates offspring ______ the parent.
german
Asexual reproduction creates offspring that are identical to the parent. 
4 0
3 years ago
An element's atomic number is the
Tju [1.3M]
D. Number of protons in an atom's nucleus
3 0
3 years ago
Read 2 more answers
An example of vesicle-mediated transport would be:
WITCHER [35]
An example of vesiscle-mediated transport would be cell secretion by exocytosis.

The reason why this would be an example of vesicle-mediated transport is because all the other types of transport listed here are not something you would call vesicle-transport; the substances don't really get transported in vesicles. This is different in exocytosis where the compounds gets packaged into vesicles.
5 0
3 years ago
Other questions:
  • Predict whether antelope and squirrels or squirrels and rabbits will have more similar DNA
    9·1 answer
  • In angiosperms, pollen grains develop in the ________ and land on the ________.
    7·1 answer
  • An example of a biological event that follows a circadian rhythm is: the migration of birds. The female menstrual cycle. Body te
    15·1 answer
  • What is the purpose of the cell membrane
    13·1 answer
  • Scientists hypothesize that prokaryotes evolved before eukaryotes because
    9·1 answer
  • Why is sandstone classified as a nonrenewable resource?
    9·1 answer
  • Can organisms plan and willingly change their
    5·1 answer
  • What protein is faulty in sickle cell anemia?
    14·2 answers
  • Drag the appropriate descriptions of the subatomic particles into the following boxes. Labels may be used more than once.
    11·1 answer
  • Which plant species probably lives in a dry region?<br> Explain the reason for your answer.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!