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
Serga [27]
3 years ago
9

The rocky material left behind by a retreating glacier forms what is called a moraine. When primary succession occurs on a morai

ne, which life-forms will help create the soil by breaking down bare rock?
A Insects
B Lichens
C Grasses
D Deciduous trees
Biology
1 answer:
nexus9112 [7]3 years ago
5 0

Answer:

The correct answer is - B. Lichens.

Explanation:

Lichens are one of the pioneer species that can grow on bare rock such as moraine and help make soil for further ecological succession and making ground for other species.

Breaking the bare rocks to convert into the soil is part of the primary succession. Lichens are colonized over these rocks and they contain acid which leads to the breakdown of the moraine and other rocks.

You might be interested in
What do mitochondrial and thylakoid membrane have in common
Nitella [24]
Mitochondrial and thylakoid membranes both use adenosine triphosphate or ATP synthase proteins in atp production.
7 0
3 years ago
Read 2 more answers
Who first suggested the theory of evolution by natural selection?
grin007 [14]

Answer:

Charles Darwin

Explanation:

Evolution theory is a shortened form of the term "theory of evolution by natural selection," which was proposed in the 19th century by Charles Darwin and Alfred Russel Wallace.

hope this helped!

3 0
4 years ago
Read 2 more answers
Define the term: threshold intensity?
madreJ [45]

Answer:

El umbral de audición es la intensidad mínima de sonido capaz de impresionar el oído humano. Aunque no siempre este umbral sea el mismo para todas las frecuencias que es capaz de percibir el oído humano, es el nivel mínimo de un sonido para que logre ser percibido.

Explanation:

8 0
3 years ago
3. Why is it important that the primary and secondary oocytes contain the majority of the cytoplasm leaving the polar oocytes wi
svetlana [45]
<h2><u>Oogenesis: </u></h2>

It initiates before birth and lasts till fertilization. Oogenesis starts when oogonia which are the juvenile eggs that structure in the ovaries before birth and have chromosomes in diploid number, experience mitosis to frame essential oocytes, likewise with the diploid number.  

Oogenesis continues as essential oocytes experiences the primary cell division of meiosis to shape optional oocytes with the haploid number of chromosomes. Auxiliary oocytes just experience the second meiotic cell division to frame a haploid ovum in the event that it is treated by a sperm. The one egg cell that comes from meiosis contains the vast majority of the cytoplasm, supplements, and organelles.  

This inconsistent conveyance of materials produces one huge cell, and one cell with minimal more than DNA. This other cell, known as a polar body, in the long run separates. The bigger cell experiences meiosis II, indeed creating a huge cell and a polar body. The huge cell forms into the develop gamete, called an ovum.  

The inconsistent conveyance of the cytoplasm during oogenesis is essential as the zygote that outcomes from preparation get the majority of its cytoplasm from the egg. So the egg needs to have much cytoplasm as could be expected.

7 0
4 years ago
Which factors affect hormone levels in your blood
guajiro [1.7K]

Answer:

The endocrine system regulates how much of each hormone is released. This can depend on levels of hormones already in the blood, or on levels of other substances in the blood, like calcium. Many things affect hormone levels, such as stress, infection, and changes in the balance of fluid and minerals in blood. hope it helped

Explanation:

6 0
2 years ago
Other questions:
  • According to scientists, ocean waves could be a source of energy. Devices are being designed to capture the energy from waves an
    11·1 answer
  • The name of the receptor region containing hair cells involved in detecting static equilibrium is
    6·1 answer
  • Only 40 percent of the body is water. <br> a. True<br> b. False
    13·2 answers
  • The results from the original crossing and the secondary crossing, can be explained by realizing that there are three alternativ
    9·1 answer
  • Explain the interaction that occurs between a t-helper lymphocyte and a b cell when the b cell is being induced to produce peanu
    13·1 answer
  • Where are earthquakes most likely to occur on Earth?
    6·1 answer
  • Ampicillin is an antibiotic that kills bacterial cells by disrupting the formation of cell walls. However, the pARA-R plasmid ha
    12·2 answers
  • What istheevidence that supports the autogenic hypothesis?
    8·1 answer
  • (25) A farmer wants to improve the yield of tomatoes from his plants.
    8·1 answer
  • PLEASE HELP ME 50 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!