When Charles Darwin stepped ashore on the Galapagos Islands in September 1835, it was the start of five weeks that would change the world of science, although he did not know it at the time. Among other finds, he observed and collected the variety of small birds that inhabited the islands, but he did not realize their significance, and failed to keep good records of his specimens and where they were collected.
Answer:
In a fibrous joint the bones which are adjacent to each other are connected by fibrous connective tissues, mainly collagen, with out forming any cavity of joint.
Explanation:
- The fibrous joints and not movable and cover important structures like brain being covered by skull bones which are articulated by fibrous joints namely sutures.
- Long bones too are stabilized by this type fibrous joints as is formed between radius and ulnar bone of forearm.
- Another important fibrous joint is in between the root of the teeth and gum sockets in maxillary region. Here fibrous joint binds the teeth firmly so that continuous motion and pressure during eating may not loosen it.
They both have molecules and atoms.
they were classified as echinoderms and not as a new phylum because they have the attribute of the echinoderm where they were seen as the sea stars without arms, they live in the deep ocean.
<h3>What is an
echinoderms?</h3>
An echinoderm can be described as the any member that can be attributed to the phylum Echinodermata.
The members of this family can be seen as one that posses a recognisable radial symmetry which help in the process of their classification, and some of the members that fall into this caetegories are:
- starfish
- brittle stars
- sea urchins
- sand dollars
- sea cucumbers
- "stone lilies
It should be noted that the phylum can be seen as the level of classification or taxonomic rank that can be seen below kingdom.
In conclusion, the Sea Daisies which was thenew class of echinoderm that was discovered in 1986 can be classified as the echinoderm and not as phylum since they have the feautures of the echinoderm.
Read more about phylum at:
brainly.com/question/586233
#SPJ1
Answer:
The circulatory system, and respiratory
