that would be a primary source because it actually is his hat not a replica. a primary source is a firsthand, or the excerpt of someone who was actually there.
That is true the hemisphere that is tilted towards the sun receives more direct sin light. So it must be right
D - Mongolia. This is because it is a landlocked country which means it is only surrounded by countries, not oceans. Therefore, it would not have access to big oceans/seas.
Answer:

Take the temperature readings on the hour for a 24-hour period. Add the hourly readings together, then divide that number by 24 to get the mean daily temperature.
hope helpful~
The layer of sun in which gamma ray photons produce is the core