The spectrum of a star that is observed on Earth changes depending on the relative velocity of the star and Earth. The dark vertical lines indicate
wavelengths that are absorbed by elements in the star.
Increase the velocity to 5 km/s and observe how the spectrum of the star
changes.

Dna is the genetic material that makes up living things, and folic acid plays an important role in the information of dna. jon wants to study the effect of folic acid on dna formation in microbes. which statement accurately describes the variables in this study

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.

What is used to keep track of the gamates and possible offsprings combination