B:2 it is measured by the crest of the wave or as I say the top of the wave
It depends on your teacher, it should be A. It could be B if that’s what your teacher wants but I would go with A.
Answer:
The Elephant can be defined as a KEYSTONE SPECIE
Explanation:
A KEYSTONE SPECIE is an animal specie that maintains an ecosystem relative to their population. These species' activities, play a crucial role in maintaining the ecosystem. In this case, the elephant's activity of uprooting trees, helps in keeping the ecosystem in check, and support its current inhabitants.
I hope this helps with your work :)
When you breathe air in your diaphragm tightens and moves downward. It also increases the space in your chest cavity causing your lungs to expand.The muscles in your ribs also help to enlarge your chest cavity. This causes your rib cage to pull upward and outward when you inhale. When you exhale the exact opposite happens.
