The correct answer is: sea stars
All animals listed above are invertebrates. One of the characteristic of invertebrates are that they are protostomes with the exception of Echinodermata (sea stars). The difference between protostomes and deuterostomes is in their embryonic development (orgin of mouth and anus).
In protostomes the mouth forms first: the oral end of the animal develops from the first developmental opening. On the other hand in deuterostomes the first opening (the blastopore) becomes the anus, and the oral end of the develops from the second opening.
Humans are also deuterostomes.
Explanation:
A genetic trait that helps an organism be more successful in its environment
Proteins, carbohydrates, nucleic acids, and lipids
2 or more different atoms are combined in definite proportions in any compound.
Answer:
Increasing the number of trusses increases the strength of the bridge.
Explanation:
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