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
Setler79 [48]
2 years ago
6

Salmon eggs hatch in fresh water. The fish then migrate to the ocean (a hypertonic solution) and, after several years of feeding

and growing, return to fresh water to breed. How can these organisms make the transition from fresh water to ocean water and back to fresh water?
a. Salmon in fresh water excrete concentrated urine, and salmon in salt water secrete dilute urine.
b. The rectal gland functions in the ocean water, and chloride cells function in fresh water.
c. The salt transport mechanisms of the gill epithelia change during migration.
d. Their metabolism changes in salt water to degrade electrolytes.

Biology
1 answer:
Ray Of Light [21]2 years ago
3 0

Answer:

Letter C

Explanation:

Salmon have a physiological adaptation that allows osmoregulation to occur in two different environments (seawater and freshwater). There are specific molecules in the salmon gills that "pump" and "remove" Na and Cl ions. When at sea these molecules pump the ions out of the salmon's body and into freshwater, the same molecules remove Na and Cl from the water bringing it into the animal's blood.

You might be interested in
Please help tyyyyy :)
rosijanka [135]

Answer:

Hard

Explanation:

it is hard because these are usually hard parts of an organism including shells, bones, teeth, woody trunk, stems, and branches.

3 0
2 years ago
What is the main function of the immune (lymphatic) system?
jekas [21]

Answer:

<h2>A. Keeping a body healthy from disease</h2>

5 0
2 years ago
Read 2 more answers
_____ (meaning ''spiny skin'') have a water vascular system that functions in locomotion, feeding, and gas exchange.
n200080 [17]

The answer is:

Echinodermata

The word echinodermata is Greek which literally means "Spiny Skin". Echinodermata is a phylum under kingdom animalia. Not all of them have spiny skins, but most of them do. Other characteristics would be their radially symmetric body. They have appendages that grow outward from the center. Examples of echinoderms would be sea stars and sea urchins.

4 0
2 years ago
These are groups of reproducing populations that are isolated from other groups.
MArishka [77]
<span>Species is a group of reproducing populations that are isolated from other groups. </span>
6 0
3 years ago
Read 2 more answers
Please help, online school is sucking rn :(
gayaneshka [121]
I feel you the first one
3 0
2 years ago
Other questions:
  • The study of organisms based on their similar body structures is referred to as _____. comparative morphology comparative embryo
    6·2 answers
  • What is the function of the organelles that are labeled F?
    12·2 answers
  • What is the effect of differential reproduction over time?
    5·2 answers
  • What biochemicals both enter and leave a leaf
    7·1 answer
  • 3. Explain why do animal<br>cells have mitochondria but<br>no chloroplasts?​
    14·1 answer
  • Describe how water is recycled from the atmosphere back to the root​
    5·1 answer
  • What is the type of artificial selection (or selective breeding) in which scientists breed two genetically different organisms?
    11·1 answer
  • The breaking of a large organic molecule into smaller individual subunits involves multiple ________. dehydration synthesis reac
    8·1 answer
  • Considering the lungs are spongy tissue with air sacs, why would a difference in pressure cause the lungs to rupture? What is as
    15·1 answer
  • 21) What is the measure of how high or how low a wave sounds?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!