I believe the answer is C.
Hope this helps!
Answer:
Scientists divide the Earth into three layers based on composition: the crust, the mantle, and the core. These divisions are based on the compounds that make up each layer.
A stable atom with neutral charge has the same number of protons and electrons.
While the charge of protons is positve and the charge of electrons is negative, the magnitude of their charges are equal.
Then, in order to the atom be neutral the positve charge equals the negative charge, and so the number of protons equals the number of electrons.
Answer: The percentage of unknown material has grown in scientists estimates since the 1970’s; the percentage of dark matter has shrunk in scientists estimates since the 1980s
Explanation:
Answer:
D. abiotic factors
Explanation:
Some examples of abiotic factors are water, soil, air, sunlight, temperature, and minerals.
