How long does it take for a new species to arise? have we ever witnessed a new species arising - like in any laboratories or otherwise - possibly with creatures with short life spans? does it happen all the time, or is it incredibly rare?

In general, how long does it take to accomplish a long-term goal? a.a few days to a weekb.a few weeks to a monthc.a few months to a yeard. more than a year

Explain two reasons you think it is important for scientists to search for new ways to treat cancer

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction. this is an example of speciation.