Explain an event that could have caused the change in population between 1910 and 1925.

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.

Name the organs of humanelemintary canal.

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?