The food chain is very important to ecosystems.
Answer: D
Explanation: the continents wee once connected. It was known as Pangea
You know that neutrons are found in the nucleus of an atom. Under normal conditions, protons and neutrons stick together in the nucleus. During radioactive decay, they may be knocked out of there. Neutron numbers are able to change the mass of atoms, because they weigh about as much as a proton and electron together.
Answer:
Final Frontier
Explanation:
Space is the "Final Frontier"