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Tanzania [10]
3 years ago
15

Why are shellfish population often a good indicator of water quality

Biology
1 answer:
Pachacha [2.7K]3 years ago
8 0
"Water quality" may include the amounts of dissolved oxygen and the levels of algal growth, pollutants which may be present and the pH level. Water quality effects also which types of organisms can survive in a body of water.
 Shellfish require a high level of dissolved oxygen and their abundance is an indication of good water quality. Shellfish are sensitive to changes in the ecosystem and they cannot easily escape changes in the water quality. These are one of the reasons why shellfish are good indicators of water quality.
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Answer the questions based on the information given.
shusha [124]

What is the rate of motion of the Amur plate? Express your answer in .  

✔ 5 mm/year

Where would the plate be after 1 million years? Express your answer in m.  

✔ 5,000 meters east

What geologic feature will form between the Amur and Eurasian plates?  

✔ new ocean floor

3 0
3 years ago
Read 2 more answers
n mice, dwarfism is caused by an X-linked recessive allele, and pink coat is caused by an autosomal dominant allele (coats are n
nexus9112 [7]

Answer:

The probability of getting a dwarf and pink female is 1/2

Explanation:

In mice, dwarfism is caused by an X-linked recessive allele, and pink coat is caused by an autosomal dominant allele where coats are normally brownish.

A dwarf female from a pure line will have Xd Xd where d represent the  recessive trait and the female is also brownish (pp).

A pink male from a pure line will be XPY where P represent the dominant allele but not a dwarf (D).

            Xd             Xd                            Xp          Xp

XD       XDXd        XDXd             XP    XPXp     XPXp    F1 generation

Y           XdY           XdY                Y     XpY        XpY

P        XDXd   x    XdY                        XPXp    x    XpY

           XD         Xd                               XP              Xp

Xd     XDXd    <u>XdXd</u>                  Xp    <u>XPXp</u>         XpXp         F2 generation

Y        XDY        XdY                   Y       XPY          XpY

The probability of getting a dwarf and pink female is 1/2

5 0
3 years ago
Molecules that are diffusing will go from a “___ “concentration to a “___”concentration
Fiesta28 [93]
The answer is high to low
4 0
3 years ago
Read 2 more answers
When a cell phone overheats, why is it important to find out whether the heat is coming from bottom of the phone or from the oth
Reptile [31]
<span>It is important to determine weather the heat is coming from the bottom of the phone or from a different area because if you feel the heat is being emitted from the bottom of the phone, this is indicative of a battery overheating. If heat comes from other areas, it often means the phone itself is overheating.</span>
8 0
3 years ago
Three cells each contain a 98% water wash were soaked in different solutions cell number one is so funny solution containing 100
stepladder [879]

Answer: Cell number one is an hypotonic solution, cell number two is an isotonic solution, and cell three is an hypertonic solution.

Explanation:

Cell number one which is a 98% water content is added the 100% water solution, water moves from low to high concentration. Therefore, the water moves from the solution into the cell, which is hypotonic.

Cell number two which is a 98% water content added with a 98% water solution. These two solutions are equal to one another, so the water does not move. This is isotonic.

Cell number three which is a 98% water content added with a 80% water solution. Water moves from high to low concentrations, so water moves from the cell to the solution. The water leaves the cell, which is an hypertonic.

6 0
3 years ago
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