Answer:
Origin. 20 out of the 36 body plans originated in the Cambrian period, in the "Cambrian explosion", However, complete body plans of many phyla emerged much later, in the Palaeozoic or beyond.
B. The lysosome membrane helps to keep its internal compartment acidic and separates the digestive enzymes from the rest of the cell.
Answer:
A. Cloning creates variety because offspring receive genetic material that is different from that of their parent.
Explanation:
They transport the pathogens by biting, or a human eats an infected animal.
