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Alinara [238K]
3 years ago
8

Why are echinoderms more advanced than arthropods and mollusks?

Biology
1 answer:
mihalych1998 [28]3 years ago
4 0
They have internal skeletons which cover their skin. The body of an echinoderm seems little more than a skeleton of tiny plates and water. They don't use large muscles working on large body parts like many other animals. Instead they move, feed and breathe with a unique water-vascular system ending in hundreds of water-filled tube feet.
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Which of the following statements about viruses is FALSE? Which of the following statements about viruses is FALSE? Viruses cont
adoni [48]

Answer:

Viruses use their own catabolic enzymes.

Explanation:

Viruses are the infective particles present in the environment which encloses their genetic material which could be wither RNA or DNA enclosed in the protein coat.

The protein coat is made of the capsomers which are arranged in the tubular structure forming capsid. The viruses do not contain the metabolic machinery of their own that is the reason that they do not have replication or transcription or translation machinery. For this they are dependent on the host organisms as they use their machinery.

Thus, the selected option is correct.

6 0
3 years ago
If predators A and B prey upon the same species and predator A is eliminated, the population of predator B will likely _________
Allushta [10]

Answer:

Increase

Explanation:

The predator is a type of animal or bird species which kill other animals to obtain its food. The prey is the animal which is killed by the predator. According to the given situation, if the predator species A is eliminated, the population of the predator B will likely increase because there will be no competition between the two species for the same prey. And the chances of predator B obtaining the prey will increase. Hence, the population will increase.

4 0
2 years ago
Read 2 more answers
Why is it easy for a virus to mutate?
drek231 [11]

Answer:

Viruses mutate very quickly The major reason that viruses evolve faster than say, mosquitoes or snakes or bed bugs, is because they multiply faster than other organisms. And that means every new individual is an opportunity for new mutations as they make a copy of their genetic material. Many of those mutations have no noticeable effect.

Explanation:

6 0
3 years ago
Choose the law that BEST explains the example:
german

Answer:

3rd law

Explanation:

First law of Newtons :

 Newton's First Law states that, unless an external force acts on it, an object will remain in a straight line in rest or uniform motion.  

The second law of Newtons :

The second law states that an object's acceleration depends on two variables-the net force that acts on the object and the object's mass.

The change in the linear momentum of the object is equal to the force.

Third law of Newtons :

This law states that every action has its reaction with the same magnitude but in the opposite direction.

When we push the wall , then the wall does not move because the wall is fixed but we skid opposite to the direction of applied force because wall offers an opposite force on our body.

Therefore the answer is "third law".

5 0
3 years ago
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Can birth defects that are environmental be prevented?
Mashcka [7]

Answer:

Most birth defects can't be prevented, but you can take some steps to reduce the likelihood of environmental effects. Remember to always discuss your concerns with your healthcare provider and follow their instructions regarding screening tests, medications, etc.

Explanation:

6 0
2 years ago
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