Biology, 01.01.2020 03:31, tjmoney7709

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.

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answered: hector87

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.

answered: Guest

relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

hope this .. .

answered: Guest

not the best question format lol but what i think might as scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. when moths that are homozygous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.

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1) what evidence is there that the human species has been successful so far? explain.
2) wha...