Answer and Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files
Answer:
The first line of defense involves skin.
The last option: over tens of millions of years, the giant supercontinent Pangaea began to slowly drift apart forming the continents
Vascular plants<span> have two distinct organ systems: a </span>shoot<span>system and a </span>root<span> system. The </span>shoot<span> system consists of two portions: the vegetative (non-</span>reproductive<span>) parts of the plant, such as the leaves and the stems; and the </span>reproductive<span> parts of the plant, which include flowers and fruits.</span>
