The propagation velocity of the waves depends on density and elasticity of the medium. Velocity tends to increase with depth and ranges from approximately 2 to 8 km/s in the Earth's crust up to 13 km/s in the deep mantle.
The answer to number 1 is that not all animals have hair
Answer:
Cnidaria
→ Organisms have specialized stinging cells
→ Two type of body plans exist - polyp and medusa
Porifera
→ Organisms lack symmetry
→ Adult forms are sessile
→ Organisms obtain food by filtering water
→ Phenomenon of alternation of generation is observed.
Explanation:
Cnidaria, also known as the coelenterata, is a phylum of mostly marine animals having about 9,000 living species. Some of them include the corals, hydras, jellyfish, sea anemones, sea whips, etc. They possess specialized cells known as cnidocytes ( also known as “stinging cells”). These cells can seen around the mouth and tentacles cnidarian. They immobilize their prey with toxins. These Cnidaria have two body plans and which are polyp and medusa.
The phylum Porifera are known as the pore bearers. It has about 5000 species. Their adult forms are sessile. They live permanently attached to rocks. They can under alternation of generation. They possess no organs in their bodies. Also, they lack symmetry. They can be referred t as filter feeders because they obtain food by filtering water.
A supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
Frameshift mutations can be very severe. The one reason why they are often so serious is because w<span>hen a frameshift mutation occurs, it causes changes in many bases downstream and can affect many of the amino acids in the protein.
Basically, a framshift mutation causes changes in the genetic material, codons, and proteins, which can lead to many complications and disorders, some of which are the Tay-Sachs disease, but it can also cause a person to be more prone to certain cancers.
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