What does oxygen hitch a ride on to move from the lungs to the blood and eventually the heart? Your answer​

What is the most important factor in determining climates.

In a heat engine of 1000 j of heat enters the system and the piston does 500 j of work what is the final internal energy of the system if the inital energy was 2000 j we have to do all of these down here 1)write the equation 2)list out your know variables 3)plug the numbers into the equations 4)solve 5)write your solution statemtn that includes inital energuy and final energuy added

How does climate change cause the ocean's thermohaline current to slow down?