When oxygen is absent, anaerobic respiration occurs ('an' means without).
Answer:
B
Explanation:
The soap brands cultivated less bacteria culture than the warm water and hand sanitizer.
C. Is your answer. Electrons are negatively charged.
False. Strontium 90 has a half life of only 30 years, and as millions of years pass, about the time fossils have been around, most if not all of any strontium would have decayed.