The answer would be Linnaeus primarily used physical characteristics.
The first question is the first option (4 haploid cells; 2 diploid cells).
The second question is the first option also (nitrogen).
If wrong I’m sorry but good luck! Have an amazing day!
It is called a homogeneous mixture
Explanation:
The living layer of a cell is called cell membrane.
it is also called plasma membrane .
hope it is helpful to you
