Answer:
A. Lava flows block a river.
D. Ice sheets leave depressions that fill with water.
E. Movement of Earth's crust creates low areas that fill with water
Explanation:
Protons - positively charged (+1)
Neutrons - Neutral charge (0)
Electrons - Negatively charged (-1)
Protons and neutrons stay inside the nucleus, while electrons circle the outside.
Fossil fuels, they are natural fuels (because they are made of living organisms)
<span>It's is the second one. The waste materials generated by one organism are often reused by other organisms.Mass, or matter, is conserved in all physical and chemical changes. Matter is not created or destroyed within ecosystems, it only undergoes physical or chemical changes. One example of this process is that the waste materials generated by one organism are often reused by other organisms as food or nutrients.</span>
Density, population size, and distribution statistics.
