Hello there ^ _ ^
I believe the answer is : A - Evolution
Good luck!
Density - Calculated from measurements of mass and volume
Atom - the basic particle of matter
Motion - calculated from measurements of distance and time
Energy - can change form and move matter
Can't see the last one but you know process of elimination soo
To protect them from ultraviolet rays from the sun.
Answer:
Ionic compounds
Explanation:
Ionic crystals are hard and brittle and have high melting points.
If you cut a flatworm in half, both halves can grow into a new individual by fission.
