In a gasoline engine, the area in the cylinder head where the air-and-fuel mixture is burned is called the

18. over time, how do sand dunes tend to migrate? a. perpendicular to the movement of the wind b. in the same direction as the wind blows c. toward the wind d. in random directions

How do the sperm cells get from the stigma to the ovules?

Genetic orders can result when sister chromatids fail to separate properly during which phase is this problem most likely to occur