How does an increase in the human population affect
ecosystems?

Secondary succession would most likely be taking place in a(n)

Which one of the following is true of trnas? a) trnas are double-stranded. b) each trna binds a particular amino acid. c) there are four types of trna. d) trnas carry special sequences known as codons. e) all of the above

Which process forms a large molecule from repeating subunit molecules? *