Choose what you think the expressions below best represent within the context of the word problem. A man traveled a certain number of miles by automobile and then nine times as far by airplane. His total trip was 600 miles in length. How far did he travel by plane?

x represents miles by= airplane or automobile

9x represents miles by= airplane or automobile

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.

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

In a classic experiment using pea shape, mendel conducted two separate genetic crosses. in the first cross the parent plants were “true breeding” for pea shape; one had round peas ( r )and the other had wrinkled (r). the first cross produced a filial 1 generation of all round peas. in the second cross, mendel bred plants from the filial 1 generation. this cross produced different results. out of approximately 1000 plants, about 75% were round and 25% were wrinkled.