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
Musya8 [376]
3 years ago
8

.Complete the sentence

Biology
1 answer:
Dafna11 [192]3 years ago
6 0

Answer:

The answer is -

Evolution

You might be interested in
If a star of 50 solar masses were to supernova. It would most likely become a
Brums [2.3K]

If a star of 50 solar masses were to supernova. It would most likely become a black hole.

A star is a hot body of glowing gas which starts its life in Nebulae. The stars vary in size, mass and temperature. The mass of a star ranges from 1/20 times to 50 solar mass.

The stage one of the stars is born in nebula, which is a region of very high density and then it gets condensed to a huge globule of gas and dust that contracts under its own gravity.

The next stage is a region of the condensing matter which starts heating up and glowing is known as Protostar. At stage three, hydrogen fuses and forms helium as the nuclear reactions start. Stage four is a Main Sequence star when it starts to release its energy, contraction stops and it begins to shine.

Some of the stars have mass more than 3 times of the Sun and up to 50 times the mass of the sun.

When the surviving core is between 1.5-3 solar mass, with higher contraction making it tiny and dense a Neutron star is formed. If the core is greater than 3 solar masses then the core further contracts to become a Black Hole.

3 0
3 years ago
Read 2 more answers
Which B.F. Skinner invention allowed him to train subjects through operant conditioning?
Bezzdna [24]

Answer:

A: Cumulative recorder

Explanation:

B. F. Skinner was a psychologist, author, behaviorist and inventor of Operant conditioning chamber and Cumulative recorder.  The purpose of cumulative recorder was to study the rate of operant conditioning. It is a process in which behavior of an organism is modified or an organism is conditioned to perform a specific behavior through giving punishment or reward.

For example: We teach a kid that he should not touch a hot stove because it will burn his hands, or we give him a box of candies to perform a specific task or behave in a certain way. Skinner used Cumulative recorder to find the effect of certain factors on behavior or response of an organism For example: the rate at which lever was pressed by a monkey to get bananas etc.

Hope it helps!

6 0
3 years ago
Read 2 more answers
Deforestation occurs when large areas of trees are cut down. Which of the following impacts on the environment would result from
skelet666 [1.2K]

Answer:

A. increased erosion.

:)

Explanation:

6 0
3 years ago
Read 2 more answers
How does the circulatory system work with the respiratory system and the nervous system ??
11Alexandr11 [23.1K]
The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart.
6 0
3 years ago
How do warm ocean currents affect the weather?
umka21 [38]

Answer:

Increase the temperature

Explanation:

Warm ocean currents are directed movements of the sea water. Elements such as the wind can facilitate and carry their movement increasing the temperature of the environment.

5 0
3 years ago
Other questions:
  • A researcher collected archaea and protists from a thermal vent. how do the cells of these two organisms differ?
    5·1 answer
  • Which jet stream affects weather in Siberia?
    10·1 answer
  • Plasmids have a high probability of being present in the new generation of cells by all of the following EXCEPT: A. being presen
    14·1 answer
  • I need 5 paragraphs about global warming pleaseeee!!!
    9·1 answer
  • Do carbon dioxide organize the elements to form glucose
    7·1 answer
  • When did Kunle Olukotun born?
    9·1 answer
  • The small blood vessels that distribute blood throughout the entire body are Answer
    13·1 answer
  • Which of the following is most often associated with centripetal
    6·1 answer
  • Is american in a drought?
    15·2 answers
  • In the electrolysis of aqueous nabr, which substance is first produced at the anode?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!