Answer:
1. B
2. B.
The larvae mature into a form that can penetrate the skin of humans. Hookworm infection is transmitted primarily by walking barefoot on contaminated soil. One kind of hookworm (Ancylostoma duodenale)can also be transmitted through the ingestion of larvae.
3. D
4. A or C
5. A
Lichens are a complex life form that is a symbiotic partnership of two separate organisms, a fungus and an alga. ... The alga can be either a green alga or a blue-green alga, otherwise known as cyanobacteria. Many lichens will have both types of algae.
