A,C,D Is the answer to the question
The significance of the spore formation during the reproductive cycle of the bacterium is that, it provide a defensive strategy against hostile and unfavorable conditions. The spore formation allows the bacterium to reproduce and spread even when the conditions are not favorable. The spore formation also make it possible for the bacterium to remain dormant over a long period of time during unfavorable conditions, waiting for the right conditions to become active again.
The word phase means to change a part of a development
Properties of matter. solid, liquid, gas.
atoms. tiny particles that make up matter.
volume. amount of space that matter takes up.
mass. the amount of matter an object has.
I would go with lipids:) hope it helps
