Answer:
reciprocal exchange of dna
A tree is considered living because it takes in nutrients like other living things. The tree is also made up of cells which all living things are made up of. Trees can also produce offspring. Just like any other living thing.
Answer:
the bacteria is bad because with that one person it's in difficult time. hem need to take more careful.
A. rust because rust is the only chemical weathering listed in the answers that i know of
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