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
Ryan was born genetically male but has external genitals that are completely female. he would be referred to as
svp [43]
Ryan was born genetically male but has external genitals that are completely female. He would be referred to as female pseudohermaphrodite. It’s a term used when a male is born with an ovary or there are external genitals which looks like an intermediate of a female reproductive organ. The opposite of which is a male pseudohermaphrodite. Pseudohermaphroditism in general is usually linked to Androgen insensitivity syndrome or 5-alpha-reductase deficiency.
8 0
3 years ago
What percentage of hearing loss can be treated with hearing aids?
frutty [35]
Hey there,
95% is the answer.

Hope this helps :))
~Top
7 0
3 years ago
Why is nitrogen important to all life???.
Firlakuza [10]

Answer:Nitrogen is a crucially important component for all life. It is an important part of many cells and processes such as amino acids, proteins and even our DNA. It is also needed to make chlorophyll in plants, which is used in photosynthesis to make their food.

Explanation:

7 0
3 years ago
Read 2 more answers
In fruit flies long wings (W) are dominant to short wings (w)
Sati [7]

We are looking for the phenotype of the known parent. The Punnett square tells us the known parent's genotype is Ww.

Note: The genotype is the set of genes for a certain trait of an individual, while the phenotype is the displayed characteristics of that trait. In this case, the possible genotypes are WW, Ww, and ww, and the phenotypes of those genotypes are long-winged, long-winged, and short-winged, respectively.

Also note: Genotypes with a dominant allele will always have a phenotype that displays the dominant trait.

This means our two alleles are W (long-winged) and w (short-winged). The former is dominant and the latter is recessive.

As stated, the genotype of the known parent is Ww;  it contains a dominant allele. Since dominant traits are always displayed, and the dominant allele is long-winged, the phenotype of the known parent is long-winged.

8 0
3 years ago
________________ are chemical messengers manufactured by the endocrine glands.
morpeh [17]
The correct answer is Hormones
3 0
3 years ago
Other questions:
  • What species is/are formed at the anode of the alkaline fuel cell?
    6·1 answer
  • Which of the following is an advantage to co-evolving with a pollinator, rather than using wind pollination?
    14·1 answer
  • Warming ocean temperatures affects the biodiversity of organisms. Which of the following disruptions would you expect to see in
    11·1 answer
  • Which atoms from an ionic bond
    5·1 answer
  • Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additia
    5·2 answers
  • Branliest Will Be Given!!!!!!!!!!!!!
    6·2 answers
  • Does consuming too much salt cause high blood pressure?
    15·1 answer
  • What phase of matter is phosphorus not typically found in?
    14·1 answer
  • Clouds are formed when
    10·2 answers
  • How do the ocean waters most often provide fresh water for the Earth?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!