Answer:
less oxygenated blood into the right atrium
The rain gauge is an instrument used by meteorologists to measure the amount of precipitation in a particular region in a particular amount of time.
The rain gauge is placed on the ground in order to collect the rain or the precipitation sample. The rain gauge is labelled with the quantities, which can be used to measure the amount of precipitation.
So, the correct answer is option (a). on or near the ground.
The percent of the Earth's ocean is 70%.
I believe the answer is anaerobic respiration. Sorry if that’s wrong though! :)