Answer:
Identify how the physical barriers of the immune system protect the body against pathogens?
skin contains tightly packed cells
•skin is tough, flexible, and waterproof
Explanation:
We
all know that vascular plants really have many advantages. These refer to trees
and flowering plants which really gives us what we need. While nonvascular
plants are those small and simple plants which do not have any phloem or xylem.
Despite nonvascular plants do not have as many advantages as the vascular plant
to the people. They still played a big function in our ecosystem. For example,
the algae, algae serve as the food of some of fishes in the pond or lakes. Non-vascular
plants are also involved in processes like decomposition and indicators.<span>
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The first, second, and fourth statements are correct.
