When a sound source is approaching you, the pitch you hear becomes higher, indicating an increase in perceived frequency. if a light source is moving toward you very quickly, its perceived frequency also increases. this perception of increased frequency alters the color of the light as it approaches. which end of the visible light spectrum would you expect the color of the light to shift toward?

Structures in cells that carry out specific functions.

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation

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.