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
kari74 [83]
3 years ago
9

Microscopic plants called algae grow inside the top layer of sea ice in the Antarctic if enough sunlight reaches that layer of i

ce and enough seawater, which contains nutrients, reaches that layer after splashing onto the surface. Even though moderate snow cover reduces the sunlight that filters into the top layer, sea ice with moderate snow cover typically contains even more algae in the top layer than does sea ice with less snow cover.
Which of the following , if true most helps to explain the apparent discrepancy?


(A) As the weight of accumulated snow forces ice lower in the water, more seawater splashes onto the surface and seeps through the snow.

(B) Seawater in the Antarctic often contains higher concentrations of nutrients than does seawater in more temperate regions.

(C) As the air temperature around sea ice decreases during the winter, the likelihood decreases that snow will fall and thus add to any existing snow cover.

(D) The nutrients on which algae rely are common in seawater throughout the Antarctic.

(E) More sunlight filters through a layer of ice than through an equally thick layer of snow.
Biology
1 answer:
MrRa [10]3 years ago
5 0

Answer:

The correct answer is: (A).

Explanation:

  • In the question, it is mentioned that the algae can grow under the conditions of "enough sunlight" and "enough nutrients".
  • Sunlight reaches the algae, by first falling on the surface made up of ice and snow and then refracting from there into the top layer of the ice where the algae grows.
  • However, the capability of both snow and ice to reflect sunlight is far more than that of refracting sunlight.
  • Therefore, the amount of light received by the algae is similar in absence or presence of the layer of snow on the top layer of ice.
  • However, on deposition of snow on the layer of the ice, the weight of the ice increases and it sinks below into sea water.
  • This allows more nutrient rich sea water to percolate into the ice and reach the algae.
  • The algae receive more nutrients from the sea water and hence is capable undergoing better metabolism and growth.
  • Hence, more algae are produced under such a situation.
You might be interested in
Large numbers of ribosomes are present in cells that specialize in producing ___________molecules
babunello [35]

Answer:

Proteins.

Explanation:

Ribosomes are complex molecules present in all living cells, they are also called organelles. It serves as the site for protein synthesis. They can be gound freely in the cytoplasm or bound to certain organelles like the endoplasmic reticulum. They consist of two major structural components: the small ribosomal subunits, which read the mRNA, and the large subunits, which join amino acids to form a polypeptide chain.

There are 3 types of Ribosomes which are:

• Ribosomes link amino acids together in the order specified by messenger RNA (mRNA).

• Each unit also consist of ribosomal RNA (rRNA) molecules and a variety of ribosomal proteins.

• Transfer ribosomes (tRNA)

7 0
3 years ago
What is the term for solid organic matter transported by wind, water, or glacial erosion?
Julli [10]
Sediment or sedimentation is the term used for solid organic matter transported by wind, water or glacial erosion. Usually, Sediment is formed by weathering or rock. In time, this sediments will be accumulated and formed in a place in which it will stay.
8 0
3 years ago
Which biome is characterized by the highest annual rainfalls and primary productivity?
attashe74 [19]
The answer is the rain forest biome.
4 0
3 years ago
A sixth gene, jv, was tested against h and th. You obtain the following percentage of recombinant offspring:
GREYUIT [131]

Answer:

C. Between rai and h

Explanation:

To be able solve this problem, it will be helpful to go and review the two - point mapping data generated for all the three genes that were involved. Putting in to considering that the map distances between jv-h (7.3 mu) and h-th (16.7 mu) equal the sum of the distance between jv-th (24 mu), having been given the distance between th-rai is greater (26.2 mu), the jv gene is said to be located between rai and and h.

5 0
3 years ago
¿Por qué el agua fría se queda abajo del agua caliente?
juin [17]

Answer:

Simple.

Explanation:

The water molecules that makes the cold water stay down separate and it always stay down and the hot water that goes up. The water molecules moves very fast and it goes up into the air or evaporation.  

4 0
3 years ago
Other questions:
  • Of the chemicals that fall under the tsca ________% have been tested for toxicity and ________ have been tested for endocrine, n
    10·1 answer
  • Does increasing the size of an axial substituent always result in higher relative strain energies for the axial conformation
    5·2 answers
  • A normal strand of DNA is shown below, followed by the same strand of DNA after mutations have occurred. Identify the mutation a
    5·2 answers
  • 3. Which structures carry out life functions within cells?
    8·1 answer
  • If a man has Type O blood, can his biological children be Type AB? Explain
    10·1 answer
  • How is melanocyte cell adapted to its function?
    9·1 answer
  • What is the name of the process That forms to DNA molecules from 1? Lol help plz (UwU)
    11·1 answer
  • Which technique is used for separation of Grain and Husk.​
    6·2 answers
  • What is a biological question?
    5·1 answer
  • Levels of activity in the _____ tend to be _____ in the brains of people with schizophrenia than in other people.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!