What is an example of a microorganism acting in a harmful way? Question 8 options:

A)Bacteria infecting a cut.

B)Bacteria aiding in digestion.

C)Bacteria used to create yogurt.

D)Fungi decomposing waste in a septic tank

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?

One similarity and one difference between an element and a mixture of elements

Which scientists contributed to the determination of how cfcs in clouds in the upper atmosphere could destroy ozone molecules