Which time of air mass originates in canada?

a. martime polar
b. continental polar
c. martime tropical
d. continental tropical

Look at the picture below . what does this picture represent ?

16. which of the following accurately describes a step within transcription? a. dna polymerase uses one strand of rna as a template to put together nucleotides. b. the dna strand is used as a template for which a complementary rna strand can be produced. c. the rna strand forms a template by which dna can be built. d. the rna strand is produced within the cytoplasm.

This is a scaffolding of protein fibers that us sell keep it shape in a cell division and cell movement