Answer:
the answer would be the 3rd answer
Explanation:
a half life is the time it takes for half of a radioactive substance to decay
I hope this helps :)
Answer:B
Explanation:
Plants use CO2 and create oxygen, CO2 is CO2 no matter where it is from
Used googled translate and it said:
Which of the following groups includes more closely related organisms?
A. Phylum
B. Family
C. Genus
D. Species
E. Race
Using the classification introduced by <span>Carolus Linnaeus, the closely related organisms are under the group of D. SPECIES.
Domain </span>→ Kingdom → Phylum → Subphyla → Class → Order → Family → Genus → Species