Surface currents are not affected by a global winds b volcanic activity c coriolis effect d continents

Which codon is the code for the amino acid histidine (his)?

Living cells cannot use heat to provide the activation energy for biochemical reactions because which choice(s) complete the sentence correctly? a) answer choice ii. eliminate b) answer choices ii and iv. c) answer choice iii and iv. d) all answers can complete the sentence.

In which situations is the principle of cross-cutting relationship useful in determining relative age?