5. What is a pioneer species?

The pioneer species are hardly species which are the first to colonize barren environments or previously biodiverse steady-state ecosystems that have been disrupted, such as by fire. Some lichens grow on rocks without soil, so may be among the first of life forms and break down the rocks into soil for plants.

the answer is otpion c) understanding

he wants to be heard one more time. he wants to be understood. he needs the truth one more time.

it would lead to upper respiratory infections and pneumonia.