I’ll give brainleist and thanks, if you answer correctly.

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.

What are the student's observations and inferences before he starts his investigation?

All ova contain sex chromosomes corresponding to: x y xx xy