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
Evgen [1.6K]
3 years ago
13

At one time, Chondrichthyes were thought to have split off from other vertebrates before the evolution of bone. Now we have conc

luded that the Chondrichthyes split off after the evolution of bone had started. This change demonstrate
Biology
1 answer:
Goshia [24]3 years ago
8 0

Answer:

Chondrichthyes Class of vertebrate animals characterized by a cartilaginous endoskeleton, a skin covered by placoid scales, the structure of their fin rays, and the absence of a bony operculum, lungs, and swim bladder. It includes the subclasses Elasmobranchii (sharks, rays) and Holocephali (ghostfish).

Explanation:

You might be interested in
Select all that apply. Animals can communicate by _____.
True [87]
.. what where the options if the question is saying select all that apply?
7 0
3 years ago
Read 2 more answers
Sandra stepped off the curb, turned her head to the left, and saw a bus approaching very quickly. She shrieked and jumped back o
Fittoniya [83]
C. her cerebellum in the center of her brain started it by coordinating her muscle    movements 
3 0
3 years ago
MARK AS BRAINLIEST
stellarik [79]

Explanation:

Amino acid is made of an Amino group , a Carboxyl group And an R group . there is also an additional H there .

6 0
4 years ago
Read 2 more answers
What role do animal preserves play in maintaining ecosystem biodiversity?
monitta

Answer:

Animals preserve play very important role in maintaining ecosystem biodiversity. In animal preserves, animals are protected from the harmful effects of the changes which occur in the environments due to human intervention. In animal preserves,

animals should be kept in proper environment and provide a proper place for living and food in order to increase the population of the animals.

4 0
3 years ago
Aldosterone
Alexandra [31]
I think d is the correct answer or not
4 0
3 years ago
Read 2 more answers
Other questions:
  • Why are some of us more prone than others to coronary heart disease?
    6·1 answer
  • Amelia is working with two chemical solutions in her chemistry laboratory. Solution A neutralizes an acidic solution and solutio
    10·2 answers
  • I need ans of Q2 and 3 really really quick
    15·1 answer
  • How do organisms obtain energy ?
    11·2 answers
  • Your partner informs you that he believes the 90-year-old male you are caring for is dehydrated. What signs or symptoms best rei
    11·1 answer
  • If the planets rotation stopped what is 1 thing that would most likely occur
    6·1 answer
  • What is the anatomy of a leaf
    6·1 answer
  • Explain the relationship between photosynthesis and cellular respiration using the following words: Photosynthesis, Cellular res
    8·1 answer
  • In _________, enzymes cut DNA into fragments, which are separated by size to form a pattern of bands.
    5·1 answer
  • The ____ receive messages from other neurons and send them to the cell body.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!