SA nodw-→ Av node-→ Bundle Of His -→ Bundle Branches-→ Purkinje fibers
The answers:
1. C. Tundra
2. C. Tundra & Desert
3. A. Exposure to solar flares
4. D. Latitude
5. B. Warmer temperatures and higher average rainfall in the tropical rain forest allow more living things to survive
Answer:
Answer is B.
Explanation:
<u>Period is duration of time</u>.
Period can be of a second,minute,hour or of Some years.We will give unit according to the duration of time.In the given options second is most obvious because it is used to measure time.
Measuring photosynthesis via the production of oxygen. Oxygen can be measured by counting bubbles evolved from pondweed, or by using the Audus apparatus to measure the amount of gas evolved over a period of time.
Answer:
because the real planets are huge
Explanation:
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