When a wave is bent at an angle as it passes through a new medium it is called

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

Microorganisms are involved in each of the following processes excepta. smog production.b. food production.c. infection.d. o2 production.e. decomposition of organic material.

How is mitosis different in plants and animals? a. in animals, the cell membrane pinches together. b. in plants,the dna is one circular chromosomes. c. in plants, there are no sister chromatids. d. in animals, a new cell wall forms.