Which type star system have the most stars?

Which of the following are energy solutions that release pollution into the air>

Which statement is true about the cell theory? a) it is well-supported by evidence. b) it is unchangeable and permanent.

Cathy hypothesized that corn would not grow in mud. to test this hypothesis, she took corn kernels and placed 5 in mud, 3 in soil, and 2 in water. to her surprise, the kernels in the mud grew faster than the kernels in the soil. what error might have caused these unexpected results? a. wrong hypothesis b. not enough variables c. undefined control d. too many variables