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.
Answer:
the umbilical cord is connected to both the mother and the unborn child and so tranfers nutrients from the mothers blood to that of the baby's blood
Answer:
the answer is 'rectilinear propogation of light'
Explanation:
The double chain in the unsaturated fatty acid cause it to bent; unlike saturated fatty acid which has no double bond, is straight.
