Why are rainforests considered fragile environments that are vulnerable to permanent destruction?

Answer;

-Rain forests typically support large numbers of plants and animals on a thin layer of topsoil. Removal of vegetation leads to depletion of soil nutrients and hardening of the soil, eliminating the possibility of reforestation.

Explanation;

Tropical rainforests feature a wide variety of tall trees, diverse populations of plants and animals, warm climates and lots and lots of rain. All rainforests have a canopy, which is a layer of branches and leaves formed at the tops of the tall trees that make up the rainforest.

-Rainforests are forests characterized by high rainfall, with annual rainfall in the case of tropical rainforests between 250 and 450 cm and definitions varying by region for temperate rainforests.

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

sex cells are usually half's then they find another half and make a fertilize egg