AYUDAA El ADN, y ARN,  esta constituido por 5 bioelementos químicos que constituyen el 96 % de la materia orgánica ,los mismos que se representan por símbolos . ¿Cuáles son estos bioelementos?
  A)     N __  Ca__ Mg__ O__  C
  B)     C __   P __   Cl__  N __  O
  C)     C  __  N __    Fe __ O __ H 
  D)     C  __  P  __  N __  O __  H​

Fossils can only be formed when? if mud, silt or tar is in the area to preserve the fossil ierosion does not occur and allows the fossil to form oxygen and microorganisms cannot decay the bones the area is dry and does not contain mud or silt

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

In general, are there any major differences that you can see? explain