Answer:
The 3.9 billion year old rock has undergone three half-lives (3.9 divided by 1.3 = 3). After 3 half-lives, 12.5% of the potassium-40 remains undecayed.
Explanation:
Answer : A model that helps explain the results of Mendel's crosses is called a (Punnett square).
Maybe a concussion or fractured vertebrae. Please mark Brainliest!!!
Are caused by the tilt of the Earth's rotational axis away or toward the sun as it travels around the sun
Answer:
C, Both parents have the blue-eyed gene.
