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.
True. Because you can touch it and it's physically real.
Answer:
I did this essay before, its not hard. Just read through it carefully and you'll figure it out. or just ask you mom, dad, guardian, or teacher for help
Given that:
mas (m) = 0.14 Kg ,
height (h) = 16 m,
Determine gravitational potential energy ?
Gravitational potential energy = m × g × h
= 0.14 × 9.81 × 16
= 21.97 Joules