This can cause speciation, the two populations can go on to create separate species.
Answer:
C. A Turtle suns itself on a rock during a cool day
Explanation:
Because, the three other answers are an internal stimuli
Answer:
a process used by plants to convert sunlight to energy
What percent of potassium-40 remains undecayed in a rock that is 3.9 billion years old? 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.
