<span>the time when the sun crosses the plane of the earth's equator, making night and day of approximately equal length all over the earth </span>
No I have not completed it but, I'd be happy to help you with any other questions you might have.
Matter is made up of atoms and has mass. This is because for anything to be considered matter it must contain atoms and atoms must have mass.
Answer:
Cell differentiation
Explanation:
Cell differentiation is common with multicellular organisms. It is the process by which a cell changes from one cell form to another. Cell differentiation makes the change from a zygote to a complex system with different parts.Cells which have been differentiated also becomes specialized. Complex multicellular animals and plants would not be in existence without specialization. This is because cells have specialized functions and each cell is very important to the survival of the organism.
B 5 years it takes 5 years before symptoms to appear
