16 neutrons are present in the most abundant isotope.
Explanation:
Phosphorus has 18 isotopes. The most common isotope has mass number (no. of protons 15+ no. of neutrons 16=) 31 .
Answer:
A. The rock was made from more than one type of material
C. Sediments and other matter were deposited in layers before lithification
It’s the first one because osmosis is always about the movement of water
During meiosis, genetic recombination may occur more than once through the process of cell division, resulting in an increase in genetic variability.
1) Atmospheric Carbon Dioxide.
Trees are an important part to this planet because they take the carbon dioxide out of the air and convert it to oxygen. When deforestation occurs, there are less trees to do this, resulting in more carbon dioxide in the air.
Hope this helps!!! Can I get Brainliest? :)