coal
Which of these can be mined from earth and used as an energy source?
A.Get rid of the waste and extra fluid
B.Ureters
C.Coal
D.Bladder
ans is coal
Answer:
A) It tends to increase from top to bottom of a group
Answer:
Synthetic Resource
Explanation:
Synthetic materials are made from natural resources. Synthetic materials are made by chemically changing the starting substances to create a material with different characteristics. Some examples of synthetic materials are plastics, medicines, and new fuels.
1, <span>One has a brain, with a forebrain, a midbrain, and a hindbrain, the other has ganglia which integration can occur
2, fish
3, flatworm
4, ions
5, </span><span>sensors</span>