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erik [133]
4 years ago
10

Yo can someone help me out

Biology
2 answers:
levacccp [35]4 years ago
6 0
The answer is A because it is the one thing that was not changed
svet-max [94.6K]4 years ago
5 0
A constant is something that is kept the same throughout the course of a experiment. So I would guess C) because they are not doing anything special. If it’s not C then it is A. :)
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Tube dwelling polychaetes look similar to some sea anemones, especially those that bury themselves in the mud. Both animals have
prohojiy [21]

Answer:

Sea anemones are marine predatory animals. They are like a terrestrial flowering plant due to their colorful appearance. They are coming under the phylum cnidaria.  

Sea anemones are found in different forms called a polyp. It has a columnar trunk, on the top of the trunk an oral disc and centrally placed mouth. The mouth is surrounded by tentacles.

Sea anemones have a gastrovascular cavity that serves as stomach. This cavity has one opening both meant for mouth and anus.

Sea anemones are capable of changing their shape and lives on the mud, holding it by pedal disc.

Polychaetes are segmented worms. Each segment of the body bears parapodia. It helps them in locomotion. There are different types of polychaetes, tube-dwelling polychaetes are one of them.

Tube - dwelling polychaetes make tubes to protect their soft bodies.  

They don't have parapodia but some special anterior structures for feeding. The tubes are made from calcareous materials.

3 0
3 years ago
Expt. No.
SashulF [63]

Answer:

The process of the formation of Urine starts when the blood enters the kidney and is filtered by the nephrons to separate the water from the larger elements that compound it like blood cells and proteins. Then, they go to the blood, and the elements that passed the filtration membrane go to the renal tubule to be moved to the bladder or be reabsorbed in case they are necessary for the body.

Explanation:

The Urine creation process starts with the blood entering the nephron in the kidneys. Then it is filtrated blocking blood cells and large proteins, making only water and smaller elements pass the filtration membrane. Then, cells and proteins, as well as the elements that couldn't pass the filtration membrane, go back to the bloodstream. While the elements that passed the filtration membrane go to the nephron to enter the renal tubule. In this tube some of the components that can still be used by the body are reabsorbed, the rest continues its journey to the bladder.

7 0
4 years ago
03:03:05
Mila [183]

Answer:

I think its is Archaebacteria

Explanation:

I think it is 3) Archaebacteria

4 0
3 years ago
_is a molecule that directs all of a cells activities
alex41 [277]

Answer:

\boxed{\mathrm{Nucleus}}

Explanation:

The nucleus directs all cellular activities. The nucleus also contains genetic material of eukaryotic organisms.

6 0
4 years ago
Developing a (n)______ made absorption of nutrients more efficient for roundworms. Coelom,anus,or mouth
weeeeeb [17]
Developing a coelom made nutrients more easily absorbed by roundworms. A coelom is a fluid filled cavity developed in the mesoderm and it is the main body of a roundworm. It contains the digestive tract and many other organs. 
4 0
4 years ago
Read 2 more answers
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