The half-life of a radioisotope is the amon the symbol 42He, the subscript 2 is the mass number for helium and the superscript 4 is the atomic number for helium.
Answer:
maybe it helps
Explanation:
Daytime temperatures are often around 70°F (25°C) and occasionally 80°F (30°C) at lower elevations. Nights are usually cool and temperatures may drop below freezing at higher elevations.
The existence of land bridges was used to dispute continental drift
Answer: (A) Cellular Respiration takes place in producers,Primary Consumer, and Secondary Consumers.
(B) No
Explanation:
False <span>Weather describes the average conditions of an area over long periods of time?</span>
