Your answer is c for #3, hope i helped!
The density does NOT change. If you have an object and then ylu split it in half, the density does not change, it will be the same.
A. Iron-titanium oxide helps preserve the direction of magnetic fields
Answer:
Green plants have the ability to make their own food. They do this through a process called photosynthesis, which uses a green pigment called chlorophyll. A pigment is a molecule that has a particular color and can absorb light at different wavelengths, depending on the color.
I believe it is evolution