1) Those trees that grow in open clusters or in pure associations.
2)Those plants that grow on ate attached in some way to other plants for physical support.
Not, Viruses are not considered "alive" because they lack many of the properties that scientists associate with living organisms. Primarily, they lack the ability to reproduce without the aid of a host cell, and don't use the typical cell- division approach to replication.
C. atomic number is the answer
Answer:
nitrogenous bases from the cytoplasm link up with an exposed complementary base
D, they need to be able to absorb and keep water to prevent drying out