1) what evidence is there that the human species has been successful so far? explain.
2) what environmental pressures in the past do you think were most important in shaping the human species as it exists today?
3) what environmental pressures exist now that you think may be shaping the human species?
4) what environmental pressures do you think may affect humans as earth becomes more populated with humans in the future? explain how these pressures may affect human traits.

1) What evidence is there that the human species has been successful so far? Explain. 

Successful evolutionarily means "surviving and spreading geographically". Since we are far from extinction and we've spread all over the world, we are successful as a species. 

2) What environmental pressures in the past do you think were most important in shaping the human species as it exists today? 

Those were: the weather (too cold, especially in the north and too hot in Sahara) - those made people more able to accomodate to the weather and predators - this made the species more communicative as only working together can we fight off bigger predators. 

3) What environmental pressures exist now that you think may be shaping the human species? 

The pressures today are : the limited free land, limited resources and changing climate. They are connected to man-made global warming and overpopulation


4) What environmental pressures do you think may affect humans as Earth becomes more populated with humans in the future? Explain how these pressures may affect human traits.

The pressure in the past will be: raising temperature and flooding, more Co2 in the atmosphere. 

We might for example evolve to better extract the oxygen from the atmosphere and be better resistant to heat. 

I believe that the environmental pressures that exist now and that may be shaping the human species are the use of land, the extraction of resources, greenhouse emissions and water use. This are being used by use more and more as we start overpopulating the earth.