Gene expression in eukaryota cells is controlled by transcription factors, which are carbohydrates lipids proteins

substitution is the answer in this case

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

explanation:

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.