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
Andreas93 [3]
3 years ago
13

What’s the differences between the three main classes of sponges.

Biology
1 answer:
Anon25 [30]3 years ago
6 0

Answer: There are three classes. These classes include Calcerea, Desmospongia, and Hexactinellida. They are divided into these classes based mostly on the composition of their spicules and skeletal fibers. (spicules are rod-shaped cellular projections that make up the skeleton of sponges) hope this helps!

Explanation:

You might be interested in
Which plant genus dominated glaciated regions during the late paleozoic and early mesozoic?
lesya692 [45]
<span>Glossopteris. It was a woody plant during the late paleozoic and early mesozoic era. It belonged to ferns of order Glossopteridales. The name originated from the tongue shape of leaves. The fossil records were obtained from the southern supercontinent of Gondwana</span>
7 0
3 years ago
What are the 4 ingredients needed to create a hurricane?
bixtya [17]

Answer:

According to NASA there are four main ingredients that combine to make a hurricane. The first is a pre-existing weather disturbance. Most hurricanes start as a tropical wave, or low-pressure area. The second ingredient is warm water.

Explanation:

3 0
2 years ago
Which substance may lower air temperatures after a volcanic eruption?
Alexxandr [17]

Answer:

Gas Sulfur Dioxide and Ash

Explanation:

Gas sulphur dioxide and ash have a cooling effect on the surrounding environment after a volcanic eruption. The gas sulphur dioxide has special properties which allows it to reflect sunlight away from Earth. It also reflects other volcanic gases in the atmosphere, which ensures cooling at the site of the volcano.

5 0
3 years ago
Which statement is true of X chromosomes? A.Women have two of them.
Damm [24]

Answer: A

Explanation:

A women has two X chromosomes while men have one X and one Y chromosomes.

8 0
3 years ago
Carbohydrates and proteins are built up from their basic building blocks by the ________. Carbohydrates and proteins are built u
antiseptic1488 [7]

Answer:

removal of water molecule between each two units

Explanation:

5 0
2 years ago
Other questions:
  • The diploid garden pea plant has 14 chromosomes. The haploid fungus Neurospora crassa has 7 chromosomes. Neither organism has se
    15·1 answer
  • Which statement concerning osmosis and active transport is NOT correct?
    7·1 answer
  • Question no 9 <br> For Thé options and questions view the image
    13·1 answer
  • Which of these best describes erosion?
    8·2 answers
  • Suppose a human blood cell containing a 0.9 percent solute concentration were put into a container of 0 percent solute solution
    10·1 answer
  • If a star is shown to be 33.11 trillion kilometers away, how many light years would that be?
    14·1 answer
  • temperature... A.) is not related to thermal energy B.) is an indicator of the amount of averge kinetic energy that an object po
    10·1 answer
  • Explain five important things that can be determined by studying fossils.
    11·1 answer
  • How does lyme disease affect the central nervous system?
    5·2 answers
  • Since he cannot cut out a piece of the floor, which steps should he perform to collect the saliva sample?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!