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
Sergeeva-Olga [200]
3 years ago
7

A dam is built that changes water flow nearby. The water flowing through a marsh completely stops. What is the most likely effec

t of this change?
A. The marsh will become less productive.
B. The marsh will have more oxygen.
C. The marsh will grow more plants.
D. The marsh will have more photosynthesis.
Biology
2 answers:
Aleks04 [339]3 years ago
4 0

Answer:

A: The marsh will become less productive

Explanation:

Option A is the correct answer because, if the water flow changes to the point where no water is able to enter a certain area, most plant life will die out.

There are a few plants that can survive with very little water, but not enough to sustain a whole ecosystem.

The marsh will not have more oxygen, because underwater plants acquire oxygen through the water surrounding it (oxygen diffuses into the water).

The marsh will not grow more plants, because water is the key factor needed in order for plants to grow, and due to no plants being able to sustain themselves, the rate of photosynthesis will also decrease.

navik [9.2K]3 years ago
3 0
A. The marsh will become less productive
You might be interested in
Which example best describes how an X-ray machine works?
zhenek [66]

Explanation:

putting hand in front of flash light

4 0
3 years ago
What is the act of adding water to crops?
Leona [35]

Answer:

The seed of the crop absorbs the water and with sunlight, allows the crop to grow

Explanation:

4 0
3 years ago
Read 2 more answers
HELP ME CMONN:) jsndjw
Keith_Richards [23]

Answer:

The third and the fourth option.

3Mg+1Fe_2O_3 \\  = 3MgO + 2Fe[tex]3Mg+1Fe_2O_3 \\  = 3MgO + 2Fe \\

3Mg + 3Fe_2O_3= 3MgO+6Fepl

Explanation:

The number of products and reactants are balanced

6 0
3 years ago
Jimmy has always been told that if you have chicken pox once, you will not get the disease again. He had chicken pox when he was
Solnce55 [7]

In immunology two types of immune response are described depending on whether there is prior contact with the antigen.

• At this first contact, only lymphocytes with receptors specific to the antigen in question are stimulated and lead to the production of antibodies capable of neutralizing it. The lymphocytes capable of recognizing a specific antigen are very few and the production of antibodies - of low intensity and limited duration - is detectable only after a period of latency of several days. This is called the primary response. The specificity of the resulting seropositivity, however, makes it possible to detect contamination (seroconversion).

• Upon re-contact with an antigen that has already triggered a primary response, specific antibody production is found to increase rapidly after a short latency period. The secretion of IgG then reaches levels much higher than those observed during the primary response, while that of IgM is of the same order. This early and intense response, called secondary response, most often results in the destruction of infectious agents before any clinical sign.

• Many centuries before the discovery of microbes, it was noted that people who developed a contagious disease without death were then specifically immunized against the disease, without being protected against others.

• The ability to react appropriately to an already received stimulus supposes the existence of a memory. The immune memory is based on the existence of memory B and T lymphocytes, resulting from the clonal expansion due to the first contact with the antigen. Their lifespan is significantly higher than that of other lymphocytes and their high reactivity gives its rapid and intense character to the secondary response.

5 0
3 years ago
Read 2 more answers
Which air mass often originates as a different air mass in siberia and is subsequently altered?
podryga [215]
It is a cold Artic air mass over Siberia. Air masses are altered because it doesn't stay in one place and changes as it moves due to the temperature of environment that can be caused by moisture. The cold Artic Mass from Siberia will go to the North Pole, Canada then moves further to the South area.
3 0
3 years ago
Other questions:
  • When an antigen attacks the body, it activates adaptive immunity. This adaptive immunity produces a strong response when it enco
    14·2 answers
  • Infer the consequences for evolution if species did not vary
    6·1 answer
  • Which statement about anabolic reactions is true? Select one: a. None of these choices are correct. b. Anabolic reactions are en
    10·1 answer
  • During what phase do sister chromatids separate ?
    8·1 answer
  • What is true of better suited organisms in a population
    6·1 answer
  • What is the primary source of energy in a food change
    8·1 answer
  • I WILL MARK BRAINLIEST) Which of the following terms best describes the cells that occur in the majority of your body that are d
    9·1 answer
  • What turns on and off the lac operon
    11·1 answer
  • Jingle bells, jingle bells
    14·2 answers
  • How would the equilibrium change if the ocean became more acidic?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!