A scientist finds that a sample of matter contains three types of atoms. The sample can be any of the following, except: A. compound
B. molecule
C. element
D. mixture

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 maintain homeostasis when a persons internal body temperature is 97.5°f

This comparative chart is an example of one that might be used by scientists and law enforcement personnel for identification purposes. the chart represents a technological advance called