The phylum Echinodermata , which contains about 6000 species, gets its name from the Greek, literally meaning "spiny skin." Many echinoderms actually do have "spiny" skin, but others do not. This phylum exists exclusively in the sea, and cannot be found on land or in fresh water. All echinoderms have one thing in common: radial symmetry. This means that the creatures have appendages (or body construction) which point outward from the center of the body like the spokes on a bicycle wheel. Furthermore, these appendages usually occur in multiples of five, although there are a few exceptions. There are several well known members of this group, like sea stars and sea urchins. The radial symmetry is obvious in these creatures.
Answer:
Self-report measures were used to avoid interviewer bias. By introducing computer software, interviewer bias may be reduced. However, interviews were not conducted blindly with cases and controls, and as such interviewer bias cannot be excluded as having an influence on our findings
Explanation:
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Answer:
The answer is C hope this helps
Primary, so the first option, or option A
