Answer:
In uranium-lead dating, for instance, the radioactive decay of uranium into lead proceeds at a reliable rate. Based on the very old zircon rock from Australia we know that the Earth is at least 4.374 billion years old.
And that's how after rounding we know that earth is 4.5 years old.
A is false.
Respiration breaks down glucose and oxygen, not food.
Hope this helps.
Answer:
L. H. Bailey
Explanation:
A cultivar is variety of a plant specie that has been developed from a natural species and maintained under cultivation. The are usually plant species that have been selected from a population because of their distint and desirable characteristics which are usually maintained during propagation.
The term was introduced by L.H Bailey
Cold air is high density compared to hot air which is less dense
