Social factors can influence the evolution of a system. For example, when more women joined the work force, the need for quality child care rose. (a) Name two systems, and for each one list two social factors that have caused those systems to evolve. Discuss your answers with a partner. K/U (b) From your discussions, add one more system to your list and describe two social factors that caused it to evolve. K/U T/I

(select all the correct choose each statement that is scientific. - the opinions of randomly selected participants in a survey prove the idea that global temperatures are not increasing on earth. - the universe's average temperature and rate of expansion support the idea that it began as one super-dense and hot mass 13.8 billion years ago. - ocean tides are caused by the uneven gravitational pulls of the moon and sun on different parts of earth. - human life is more valuable than other forms of life on earth because humans are more intelligent than other organisms.

Where in the cell are ribosomes made?

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.