1. Gene- a portion of DNA which codes a specific hereditary trait
2. Allele- alternate forms of a specific gene
3. Trait- A genetic characteristic of the individual
4. Chromosome - a thread-like molecule....
Answer: absolute certainty is often difficult to achieve. Scientific uncertainty generally means that there is a range of possible values within which the true value of the measurement lies.
Please brainliest
The LITHOSPHERE is the rocky outer part of the earth , is is made up of the brittle crust an top of the mantle.
I think the answer is oxygen, but not 100% sure