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.
Answer:
most forms of cancer are caused by somatic mutations
Explanation:
It would have 64 protons. The atomic number is just how many protons an element has.
According to Max Weber, what factor or factors are responsible for social stratification?
B. class, prestige, and power
~Hope this answers your question!~
