Does all human activity have a negative impact on the environment and ecosystems? *
A:NO
B:YES

Please help for my homework

A. NO

Explanation:

Because it depends if the activity. negatively or positively. Because humans can be very careful of how they affect the Earth and sometimes they can't.

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus

d. planting trees

the trees take in carbon to make oxygen.