Which group of elements on the periodic table forms covalent compounds with other nonmetals Group 1

Group 2

Group 17

Group 18

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.

How is transcription similar to translation in terms of base pairing?

How does photosynthesis show the conservation of mass and energy?