All chordates have....pharangeal gills slits , notochord, hollow dorsal nerve cord and post anal tail !!!
The regions which receive a lot of volcanic activities are those that belong to the Pacific Ring of Fire. This belt contains more than 80% of the volcanoes in the globe. Specifically, the 3 countries with most volcanic activities are Indonesia, Philippines and Japan.
Answer:
A retrovirus is an RNA virus that is duplicated in a host cell using the reverse transcriptase enzyme to produce DNA from its RNA genome. The DNA is then incorporated into the host's genome by an integrase enzyme. The virus thereafter replicates as part of the host cell's DNA.
Model it literally says a plastic replica