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
igor_vitrenko [27]
3 years ago
14

Do fish have an open or closed circulatory system? What does this mean?​

Biology
1 answer:
dedylja [7]3 years ago
7 0

Answer:

They have a closed circulatory system.

Explanation:

In an open circulatory system, blood vessels transport all fluids into a cavity. When the animal moves, the blood inside the cavity moves freely around the body in all directions.

Closed circulatory systems are different to open circulatory systems because blood never leaves the blood vessels. Instead, it is transferred from one blood vessel to another continuously without entering a cavity.

You might be interested in
What happens to convection currents when the liquid or gas is no longer heated?
galina1969 [7]
The whole process stops
4 0
3 years ago
Read 2 more answers
How does hand washing decrease the microbes present on your hands?
Andreas93 [3]

The answer is D. It removes the microbes but does not kill them.

7 0
2 years ago
Which of the following are important features for transcription?
devlian [24]

Answer:

The correct answer will be option-A and B.

Explanation:

Transcription is a process which synthesizes a complementary molecule of DNA which acts a messenger called RNA.

The gene contains a sequence of the nucleotide at the beginning of gene called promoter sequence. The promoter sequence has the ability to attach an RNA synthesizing enzyme called RNA polymerase.

The RNA polymerase is the enzyme which synthesizes the RNA molecules using a single strand of DNA called template strand.  RNA polymerase binds nucleotide at 3' end of the strand thus proceeding the strand in 5' to 3' direction.  

The promoter and RNA polymerase begins the process of transcription and thus option-A and B is the correct answer.

6 0
3 years ago
The best method to improve air quality is to
Nezavi [6.7K]

Answer:

Change you AC filter, don't forget about other AC filters, check you air ducts, use cooking vents, keep your rug and carpets clean, control humidity in your home, and buy indoor plants to refreshen the air.

5 0
3 years ago
Read 2 more answers
Please help Me <br> Water’s specific heat is ______ Joules
likoan [24]

Answer:

The answer is 4.18 J/g١C. Specific heat of water is 4.18 J/g١C.

3 0
2 years ago
Other questions:
  • If a cell in g1 has 40 chromosomes, then at the end of meiosis i there will be _________ chromosomes in each daughter cell, and
    11·1 answer
  • A 71-year-old immobile patient has been in his wheelchair for 2 hours. When repositioning him, the nurse observes a reddened are
    7·1 answer
  • Please help me answer this question!! ~40 points~ What happens when a neuron is stimulated by another neuron?
    12·2 answers
  • There are 5.65 calories in one gram of fat. True False
    11·1 answer
  • Explain why we see such diversity between living organisms with only 4 nitrogen bases
    15·1 answer
  • Enzymes ___ the activation energy threshold required to start a chemical reaction lower or raise
    5·1 answer
  • The bases of DNA molecules are paired together by_____ bonds along the axis of the molecule.
    8·1 answer
  • The main way a recessive allele would be expressed even when only one copy is present would be ________.
    10·1 answer
  • Urgent needs an answer now!!!!!!!!!!!!!!!!!!!! Why does it take several redox reactions in a cell to make water from hydrogen an
    5·1 answer
  • What is the benefit of using sunscreen when working outside every day?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!