Nitrogen, carbon, and oxygen are essential to life. both nitrogen and carbon are building blocks for life because they are needed in proteins dna amino acids all of the above

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

amber has allowed scientists to study dna that has been preserved over millions of years.