Genes differ from each other by: O the sequence of sugars
the presence of phosphate groups
O the sequence of bases
the shape of DNA

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.

What are positive impacts of algae? how is it used?

Why is a mushroom considered a heterotroph