Question

4)
Throughout history the world has faced many extintion events, the first one, is as old as the precambrian period around 2400 Ma (Million Years Ago) and is called the Great Oxygenation Event and led to the extintion of most anaerobic organisms due to the toxicity of the new atmosphere rich in oxygen due to new photosyntheic organisms ______ the cyanobcteria, the main responsible for the increase in oxygen concentrations in the atmosphere.

Scientists believe the latest extintion event has already started at some point between 100,000 and 200,000 years ago ______ first modern humans spread out of Africa, ______ humans started altering their environment to survive.

This human activity of changing the world to survive is crucial to human life, otherwise humans would have never been able to colonize harsh places where temperatures are too extreme, may it be the punishing deserts or the freezing poles.

That being said, it’s safe to say that the same human activity necessary for our survival in the world is also the activity that will lead to the sixth extintion event, the extintion of humankind, _____ the man reviews his relationship with the environment.



Vocabulário: throughout (através); anaerobic (anaeróbicos); main (principal); spread out (espalhar); altering (alterar, mudar); otherwise (caso contrário); harsh (inóspito, hostil); punishing (punitivo, severo); humankind (humanidade).

Choose the alternative that best completes the gaps from the text with adverbs:

Alternativas:

a)
like - as - unless

b)
like - even - unless

c)
as long as - like - even

d)
as - like - as long as

e)

unless - as - l

Answer 1

Resposta:

a) like - as - unless

Explicação:

Corrigido pelo AVA