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Licemer1 [7]
3 years ago
10

The key evolutionary development of animals seen for the first time in sponges is that of

Biology
2 answers:
Serggg [28]3 years ago
8 0
The key evolutionary development of animals seen for the first time in sponges is that of  Multicellularity.
Multicellularity means having or consisting of many cells or more than one cell to perform all vital functions. Sponge is a member of the phylum Porifera. It is a simple animal with any cells, but no mouth, muscles, heart or brain. It is any primitive multicellular aquatic animal that constitute the phylum stated above.  
Digiron [165]3 years ago
4 0
The key evolutionary development of animals seen for the first time in sponges is that of Multicellularity.    A Multicellular organism has a longer lifespan than an unicellular organism and since it has multiple cells, it can perform more functions.  Sponges do not have distinct circulatory, respiratory, digestive, and excretory systems – instead the water flow system  supports all these functions.

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How do stars have light
VMariaS [17]

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Our sun is extremly hot. like our sun, hydrogen is being converted into helium, a process which gives off energy that heats the star

Explanation:

7 0
3 years ago
Which theme is reinforced in the excerpt below from Shakespeare's Hamlet?
g100num [7]

Answer:

To quote another answer I seen from this same question "I would say that the theme which is reinforced in this excerpt is impossibility of certainty - Hamlet is uncertain what he should do next, and he expresses that uncertainty in this soliloquy. "

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Hope this helps :)

3 0
2 years ago
Which of the following is a true statement?Anabolic pathways build molecules, require energy, and are endergonic.Anabolic pathwa
expeople1 [14]

Answer:

A: Anabolic pathways build molecules, require energy and are endergonic

Explanation:

Anabolism and catabolism are the two important process of metabolism - a process through which cells get energy to drive various processes within the body and get rid of toxic wastes.

Anabolic and catabolic reactions can be described as opposing sides of the same coin. While anabolism refers to the various reactions that build up molecules within the cell, catabolism has to do with the breakdown of big or complex molecules into smaller ones.

Both processes involves energy. Anabolic reactions require energy to drive the building up process and therefore referred to as endergonic reactions. On the other hand, catabolic reactions liberate energy during the breaking down of complex molecules and therefore referred to exergonic reactions.

A good example of anabolic reaction is photosynthesis which involves the building up of carbohydrate (glucose) using carbon-dioxide, water molecule and energy while a good example of catabolic reaction is respiration which involves the breakdown of carbohydrates into carbon-dioxide, water molecules and the release of energy.

Hence, the only correct option is A.  

6 0
3 years ago
After watching plants develop, Schleiden concluded that all parts of a plant are made from plant cells. Which tenet of the cell
Gennadij [26K]

All organisms contain cells

7 0
3 years ago
Nitrogen is important for _____.
Kisachek [45]

Answer:

Explanation:Nitrogen is a naturally occurring element that is essential for growth and reproduction in both plants and animals. It is found in amino acids that make up proteins, in nucleic acids, that comprise the hereditary material and life's blueprint for all cells, and in many other organic and inorganic compounds.

8 0
3 years ago
Read 2 more answers
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