Answer:
Gold is more dense.
Gold sinks faster than lead. That's why gold is found in the bottom of a gold pan or river.
Answer:
Explanation:
Force = mass * acceleration.
Answer:
Wolves are a keystone species because they are so important to the ecosystem that their removal causes a catastrophic disequilibrium.
Explanation:
Wolves are the predators available in the environment but they exist in relatively less number while comparing it with another species of animals. Wolves influence their pray which are influenced by plants. Thus, They are so important to the ecosystem that their removal causes a catastrophic disequilibrium.
