Answer:
B) lighting a match
Explanation:
a chemical change is a chemical reaction involving the rearrangement of atoms. While a physical change can often be reversed, a chemically change typically cannot.
Always remember, if something is being lit on fire then it is a chemical change, since fire breaks the bonds in between the atoms.
Freezing water is a physical change because it can be reversed and does not alter the substance, which is water. a change in state i always a physical change
tearing up a piece of paper is a physical change since nothing on a molecular level has changed. its still paper.
Dissolving sugar in water is a <em>homogenous mixture</em>, meaning that it looks uniform without, however it is still only sugar and water, so it is a physical change.
Both A and B are correct.
Gene expression in prokaryotes can be regulated at multiple stages including transcriptional and co-translational. Operons respond routinely to the presence of specific metabolites and change the availability of activators and repressors while speific end products of biosynthetic pathways can regulate the translatability of mRNAs for new proteins.
Answer:
All living organisms thrive with food and water, so I would say the common goals of all organisms are to maintain a healthy balance of food, water, resources.
Explanation:
Brainliest is appreciated!
