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Lostsunrise [7]
4 years ago
13

Why do sea urchins have spines (spikes)

Biology
1 answer:
olga nikolaevna [1]4 years ago
4 0

Answer:

they are used for protection, maneuvering, and to trap food for consumption

Explanation:The spikes of the sea urchin are used for protection, to move about, and to trap food particles that are floating around in the water.

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Which is the dominant physical feature of planet Earth?
lesantik [10]

Answer:

Hmm.

Explanation:

The ocean is the dominant physical feature on our planet Earth, covering approximately 70% of the planet's surface.

6 0
3 years ago
Which aspect of this source should make the reader question its credibility?
Dahasolnce [82]

Answer:

The correct option is A)  It is not written by an authority

Explanation:

In the English language, credibility can be described as the quality of an object to be reliable or trusted.

A piece of written work which does not mention the name of the writer may be considered to be not reliable and trustworthy. Hence, the correct option is A.

Other options, like option D, is not correct because a peer- reviewed journal carries authentic information as the work has been rechecked by different people who have expertise on the subject.

7 0
3 years ago
Can some one plz help me I’m confused on what to do
luda_lava [24]

Answer:

the questions are asking you like what is the carrying capacity for the rabbits and etc.So you take the information from the graph and answer the questions with the information that it is giving you from the graph. I hope this answers your question.

5 0
3 years ago
Why can't the enzyme maltase, which breaks down starch into the sugar maltose, not also be used to break down the starch sucrose
Tamiku [17]

Sucrose is a processed sugar so due to chemical composition it cant break down and also enzymes break down natural sugars not processed.

7 0
4 years ago
Human blood groups are governed by three alleles, IA, IB, and i. IA and IB are codominant and i is recessive to both. A man who
Ira Lisetskai [31]

Answer:

They could have all four type phenotype that are A, B, AB, and O

Explanation:

If the man has A blood group and the woman has B blood group then the genotype of man can be IAIA or IAi and the genotype of woman can be IBIB or IBi.

               IA      i

       IB   IAIB   IBi

       i     IAi       ii

So if the genotype of the parents are IAi and IBi then out of four offspring one could have AB blood group, second could have B blood group, third could have A blood group and fourth could have O blood group as shown in the cross above.  

7 0
3 years ago
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