It's (B) A catastrophic event where 90 percent of the ocean's species were lost and 70 percent of the land life was thought to go extinct.
        
                    
             
        
        
        
Answer:
d. RNA polymerase II.
Explanation:
The main enzyme responsible for RNA synthesis is RNA polymerase, which <em>catalyzes the polymerization of 5'-triphosphate ribonucleosides (NTP) </em>directed by a DNA mold.
Eukaryotic cells contain <u>three types of nuclear RNA polymerases</u> that transcribe different types of genes. Protein-encoding genes are transcribed by RNA polymerase II to give mRNA.
 
        
             
        
        
        
In meiosis one, homologous chromosomes only separate resulting in two cells. In meiosis II, the cells divide further, separating sister chromatids and resulting in four cells. So the cells are just even smaller with less chromosomes in each one.
        
                    
             
        
        
        
PLATO USERS 
Intertidal Zone 10 m (33 ft) 
Sublittoral Zone 200 m (660 ft)
Hadal Zone 10,911 m (35,797 ft)
Bathyal Zone 6,000 m (19,686 ft)
[ a ] the sublittoral zone or the shallowest bathyal zone 
[ b ] the intertidal zone or the deepest hadal zone 
[ c ] the oceanic zone or the deepest intertidal zone
[ d ] <em><u>"The Intertidal Zone Or The Shallowest Sublittoral Zone."</u></em>