Which substances are responsible for accelerating chemical reactions in cells?
amino acids
enzymes
nucleic acids
lipids

Correct B). Enzymes

The enzymes are the biological catalyst that reduces the activation energy of the chemical reaction and increase the rate of the reaction without being used up in the reaction. The molecules on which the enzymes act are called as substrates and it converts the substrate into different molecules called as products.

Hence, the correct answer would be ''enzymes''.

relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.  

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.  

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

hope this .. .

answer; i believe the correct answer is (data); /// good luck