Which of the following is a negative effect of the development of the internet combustion engine used in most cars? A) cars allow people to move from place to place very quickly.

B) cars are expensive to manufacture and maintain.

C) exhaust released from car engines can pollute the environment.

D) the development of the car led to development in the aviation.

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.