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
Arada [10]
3 years ago
15

What purpose would the sand serve?

Biology
1 answer:
mihalych1998 [28]3 years ago
5 0

Sand is a granular material composed of finely divided rockand mineral particles. It is defined by size, being finer than gravel and coarser than silt. Sand can also refer to a textural class of soil or soil type; i.e., a soil containing more than 85 percent sand-sized particles by mass.[1]

The composition of sand varies, depending on the local rock sources and conditions, but the most common constituent of sand in inland continental settings and non-tropical coastalsettings is silica (silicon dioxide, or SiO2), usually in the form of quartz. The second most common type of sand is calcium carbonate, for example, aragonite, which has mostly been created, over the past half billion years, by various forms of life, like coral and shellfish. For example, it is the primary form of sand apparent in areas where reefs have dominated the ecosystem for millions of years like the Caribbean.

Sand is a non-renewable resource over human timescales, and sand suitable for making concrete is in high demand.[2] Desert sand, although plentiful, is not suitable for concrete, and 50 billion tons of beach sand and fossil sand is needed each year for construction.

make a brainliest and follow me

You might be interested in
The type of epithelial tissue that forms a single layer of flattened cells is
gladu [14]

Answer:

The correct answer is: simple squamous epithelium.

Explanation:

The epithelium is one of the four basic tissues found in the body, along with the connective tissue, the muscle tissue, and the nervous tissue.

Epithelial tissue is commonly found surrounding surfaces such as the skin, and also making up the inner lining of hollow organs such as the ones that form the gastrointestinal tract.

<u>The number of layers and the shape of the cells in the epithelium have a direct correlation in the function of the tissue.</u> Functions can vary a lot from organ to organ, from absorption to protection and everything in between.

<u>A</u><u> simple squamous epithelium</u><u> is composed of a single layer of flat cells, which makes it permeable to liquids and small molecules, an important feature in organs where filtration or diffusion is needed; for example: capillaries and alveoli</u>.

6 0
3 years ago
The dot plot shows the number of songs in a play list. Determine the mean of the data set. A) 39 B) 40 C) 41 D) 42
qwelly [4]
To calculate the mean all you have to do is add all the numbers from the data set and then divide the answer between the number of data set. For example, if you data set is 2,3,4,5,6,then you add 2+3+4+5+6=20 Now you divide 20 between the total number of data, so from 2 to 6 you have 5 numbers. You divide 20/5 and that that is equal to 4. 

Since you did not post your data set I can not tell you exactly the answer but you can use this information to walk you through it. 
6 0
3 years ago
Read 2 more answers
How are aquaporins helpful in osmosis?
Leto [7]

Answer:

Water moves in and out of cells by osmosis through the cell membrane. ... Aquaporins selectively conduct water molecules in and out of cells, while preventing the passage of ions and other solutes.

Explanation:

yw

4 0
3 years ago
MEDALSS!!
lawyer [7]
During the S phase in the cell cycle, the chromosomes are replicated so that there are two copies. These copies are necessary so that each daughter cell created during the M phase will have an identical copy of the DNA.

Therefore, the answer is A: The DNA must be replicated. 


The chromosomes joining, cell membrane expanding, and cytoplasm separating all happen during the M phase (mitosis).
4 0
3 years ago
Which substance on the plasma membrane helps identify chemical signals from outside the cell?
nikdorinn [45]

Answer:

The correct answer is carbohydrate chain.

Explanation:

Plasma membrane contain three types of protein  a peripheral protein b transmembrane protein and c GPI anchored protein.

    Some membrane protein basically peripheral proteins contain oligosaccharide chain arranged towards the extracellular region of the plasma  membrane with respect to the surface of that glycoprotein.

   The oligosaccharide chain of glycoprotein play an important role in to identify signals from outside the cell.These signals may include the entry of virus particles inside our body,protein targeting etc.

8 0
4 years ago
Other questions:
  • Which of the following are phagocytic?
    9·1 answer
  • Which of the following is the best example of an abiotic factor limiting population size?
    15·1 answer
  • Molten rock rises in Earth's mantle and then sinks back toward the core in a circular pattern, this method of heat transfer is k
    11·1 answer
  • There are three essential components of all homeostatic control mechanisms; control center, receptor, and effector. The __(1)___
    8·1 answer
  • Seeds contain not only a complete plant embryo, but they also store food to provide energy for the germination and early develop
    10·2 answers
  • What are potential consequences of climate change on biodiversity
    6·2 answers
  • Which of the following correctly describes binomial nomenclature?
    5·1 answer
  • Which of the following provide the first clear geophysical
    9·1 answer
  • Hormones are proteins uses as<br> -chemical receptors<br> -chemical messengers<br> -sugar
    15·1 answer
  • 1.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!