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
igomit [66]
3 years ago
15

The top layer of the crust is mostly what type of rock?

Biology
2 answers:
guajiro [1.7K]3 years ago
6 0

Answer:

b is the correct answer i guess

marta [7]3 years ago
6 0

Answer:

Igneous and Metamorphic covers 95% of the crust but there is a little bit Sedimentary, about 5%

Explanation:

You might be interested in
Y'all help me please.
nignag [31]
For the last question it's either C or D.
7 0
3 years ago
Read 2 more answers
Explain what diversity means in biology
Andrei [34K]
Different types of species
5 0
3 years ago
In leghorn chickens colored feathers are produced by a dominant allele,
Gnesinka [82]
<span> Basically the male will have CC, the hen will have cc, and neither of them will have I. The key thing is that _all_ the chicks are coloured.

The male must have at least 1 C to be coloured, and cannot possess the dominant I. The hen has cc and/or an I to not be coloured.

That one chick is coloured would tell you little - only that the hen couldn't have 2 inhibitor alleles because otherwise the chick would have to have one and it doesn't.

However, for all of many chicks to be coloured, that means that the hen can't have any inhibitor alleles (otherwise around 50% would be white for that reason alone).

So to be colourless, the hen must be cc. However, if the male had only 1 colour allele (ie it was Cc) that would still mean that 50% of the chicks would be Cc (daddy's 'c' and one of mummy's 'c's). 

Hope this helps please award brainly :)
</span>
8 0
3 years ago
Before the forming urine flows into the distal tubule of the nephron, it is in the _____ ______ _____, where water is absorbed a
liraira [26]

Answer:

<em>"Before the forming urine flows into the distal tubule of the nephron, it is in the </em><em>loop of Henle</em><em>, where water is absorbed as the fluid descends into the deep medulla of the kidney, and salts are absorbed as the fluid flows back up to the cortex of the kidney".</em>

Explanation:

Henle´s loop is a specific section of renal tubules that forms the nephrons.

In this U-shaped region, the two parts of the contorted tubule, the distal and the proximal part, are very close to each other. In the kidney, both parts of the tubules are located in the renal cortex, while the loop of Henle is located within the renal medulla.

The proximal region of the Henle´s loop is a permeable region, unlike the proximal and distal regions of the renal tubule.  

This is why it is possible the interchange of water and ions in the Henle´s loop. In the loop´s walls, cells present aquaporines in their membranes that allow passive water absorption, while they do not allow the transport of ions and urea. In this way 25% of the water that passes through the kidney might be filtered.  

The ascendant side of the loop, which is narrower, the tubule wall is impermeable to water but allows the ions´reabsorption. Here, cells present sodium, potassium, and chloride channels.

Potassium sodium pump transporters are found in the basolateral zone. While in the apical area are active transporters of the 3 ions.

Due to these differences in the water and ions´absorption between the two parts of the Henle´s loop, a countercurrent multiplier effect is produced, stratifying the osmotic compounds of the medullary interstitium, being the part closest to the cortex less concentrated than the part closest to the renal papilla, which is about 4 times more concentrated in ions.

7 0
3 years ago
What is the role of synovial fluid in synovial cavities?
andreyandreev [35.5K]

Answer:

B.Lubricating cartilage at joints

8 0
3 years ago
Other questions:
  • It is important that classification principles be standardized in order for all scientists to follow the same set of rules. An e
    13·1 answer
  • Give two examples of polygenetic traits​
    9·1 answer
  • By which process do plants obtain carbon from the atmosphere
    12·1 answer
  • Give an example of a this characteristic of life for an animal and for a plant.
    5·1 answer
  • Does the palm have arrector pili muscles
    8·1 answer
  • Essay Frankenstein predictions
    9·1 answer
  • How many electrons does barium have to give up when forming an ion
    10·1 answer
  • What kind of organisms are rotifers?
    12·2 answers
  • 3. Why do offspring look like the parent during reproduction through mitosis?
    15·1 answer
  • What happens to a limestone over time
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!