Answer:
L. E, F, G, H, I, J, K, D, C, B.
Explanation:
L is the oldest layer because it is present below all of the layers followed by E layer then F, G, H, I, J, K, D, C and B. B is the youngest layer because it is present above of all layers and formed recently. the layers formed after B layer is C layer which is younger than the rest of the layers but older than B layer. D layer is also older than C and B layer but older than the remaining layers.
Nitrogen fixation- atmospheric nitrogen is assimilated into organic compounds especially by certain microorganisms as part of the nitrogen cycle.
Answer:
The circulatory and respiratory system cooperate to circulate blood and oxygen all through the body.
Explanation:
Chronic injuries usually result from overusing one area of the body while playing a sport or exercising over a long period of time. Example: pain when performing an activity, a dull ache when at rest and swelling.
