Answer: it is working out by doing exercises that quickly accelerate your heart rate
Explanation:
A good example is running on a treadmill or jump and jacks
Answer:
resistors, transistors, capacitors, inductors, and diodes.
Explanation:

<span>by collecting “proxy data” from tree rings, ice cores, and historical records</span>
Answer:
a complex series of feeding relationships with many organisms interacting and depending on each other
Explanation: