Answer:
cutting down all trees for lumber
<span>The second statement is correct. Viruses can infect all cellular life forms, but each cellular species
can be infected by own limited specific range of viruses. Most viruses that harm
animals can not harm humans. But, some viruses can infect different species of mammals, for example both
bats and humans can be infected be rabies.</span>
<span> One is by titration, another is with a meter, and you can also measure it using colorimetric methods.</span>