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
Lady bird [3.3K]
2 years ago
11

Why does menstruation happen?

Biology
2 answers:
DedPeter [7]2 years ago
6 0
The menstrual<span> cycle </span>occurs<span> due to the rise and fall of hormones</span>
Troyanec [42]2 years ago
4 0

During that, menstruation stops because the blood came from the uterus protect it and give nourish to the fertilized egg. It usually happen because a sperm cell meet it. When menstruation happens, it develop an egg cell and carried out with the lining of the uterus called the endumetrium because it dies.

You might be interested in
PLSSSS HELPPPPPPPPPPPPPPPPPPPPPPPPPPPP
Lemur [1.5K]

Answer:

A

Explanation:

Fertilizations occurs in the fallopian tube.

Point "a" is located where the fallopian tube is at

Hence, fertilization is most likely to occur at point A

4 0
2 years ago
Read 2 more answers
What does an epidemiologist study?
Lerok [7]
Patterns incidence distribution and possible control of diseases as well as other factors pertaining to health
7 0
2 years ago
Like blood lymph flows both to and from the heart. <br> a. True <br> b. False
bezimeni [28]
False like blood lymph won't flow both to and from the heart

7 0
3 years ago
A very large fire broke out in the Sandia Mountains. Explain how this might affect the different organisms (plant and animal) th
Svet_ta [14]
This can affect the organisms living there because now, their environment is probably different than what they have been living in for a long time, so now they have to adapt to this new environment, and if they don't, the organisms will probably end up dying.
6 0
3 years ago
Which statement explains how the fossil record supports the theory of evolution?
mr_godi [17]

It's B

Explanation:

Because the fossil record shows how organisms have evoluate from relatively simple organisms to more complex organisms

4 0
3 years ago
Read 3 more answers
Other questions:
  • What roles do polysaccharides play in living things?
    14·2 answers
  • What other adaptation could have helped koalas as they evolved from land-dwellers to tree-dwellers?
    8·1 answer
  • Which is an example of a solution?<br> A) air <br> B) oxygen <br> C) salt <br> D) water
    12·2 answers
  • Which of the following organisms is the most harmful to the tree it grows on?
    7·2 answers
  • Why does the increase in human population affect biodiversity
    15·1 answer
  • Which is a component of a phospholipid?
    5·1 answer
  • Which arrow points to a bond formed by condensation between a fatty acid and a glycerol?
    7·1 answer
  • Somebody help me so I can give y’all some points
    12·2 answers
  • Which characteristics of taxonomic groups will be used to complete the chart above in X, Y, Z order?:
    9·1 answer
  • A commensal bacterium?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!