Answer:
a and b
Explanation:
Indo-European and Sino-Tibetan are the largest two language families, with over 4.6 billion speakers between them.
Answer – 3. Central Canada
The area that is the most common source region for cold, dry air masses that move over New York State is central Canada. These cold, dry air masses are called Continental polar (cP) or continental arctic (cA) air masses. Continental polar air masses are one of the five air masses that affect the United States during the course of a typical year.
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The answer is b because that how it was\

The plan covers the on-going protection and management of the natural and cultural values of the park, particularly through the management of fire, the control of weeds and feral animals and responding to and mitigating the impacts of climate change.