Vein because they have valves to prevent back flow of blood.
C) Drilling for oil in the deep ocean.
China's pollution could seiriously affect the world through things like tainted rice,which later get's exported here.
They then examined the infected cells and found that they contained labeled DNA, Since the phage DNA entered the infected cell, which demonstrated that it makes sense that DNA is the phage's genetic material. A bacteriophage or a phage is a virus that infects and replicates within Bacteria and Archaea. Phages replicate within the bacterium following the injection of their genome into its cytoplasm.
