How might you predict whether a compound is ionic or covalent simply by looking at its formula?
Which statement correctly describes a hypothesis?
A.It is a result of an experiment B.it cannot be testedC.it is a conclusion based on scientific evidenceD.it is directly testable
which statement best describes the big bang theory?
A.The universe began as a ball of energy and has been collapsing since its formation.B.The universe began as a cloud of dust and gas and has been expanding since its formation.C.The universe began... more
Tissue identification in vascular bundle sections?
I always have trouble differentiating the tissues in a vascular bundle. I specially cannot properly identify the vascular cambium and phloem. I know xylem vessel elements are large cells with... more