Answer:
Birds feathers are modified scales. true or false
Explanation:
Answer:
Everything in Earth's system such as water, land, air, and or living things.
Explanation:
All those things are called "Spheres" or specifically =
1- Hydrosphere (water)
2- Lithosphere (land)
3- Biosphere (living things)
4- atmosphere (air)
The circulatory system moves the nutrients from the digestive system to all over the body.
I believe the answer is Bone Marrow.
Hope this helps! <3
