The answer is 9 because to find the amount of neutrons you have to take away the atomic number from the mass
False
crossing over occurs in prophase 1 of meiosis 1. The significance of this crossing over is to ensure cell differentiation. If this occurred in prophase two it means the cells in meiosis 1 will be identical.
Answer:
That looks hard, search on google.
Explanation:
An environmental scientist might study the effect of soil pollution on plant growth. This is true.
Hope this helped :)
the answer is fossils I just took the test seismographs is incorrect