Which two systems in the human body work together to eliminate carbon dioxide from the body? GUYS PLEASW HELP

If you add 5.00 ml of 0.100 m sodium hydroxide to 50.0 ml of acetate buffer that is 0.100 m in both acetic acid and sodium acetate, what is the ph of the resulting solution? acetic acid: ka = 1.8. x 10-5

What is the main reason why some developing countries fear the increase the free trade policies around the world?

Some animals that try to adapt to climate changes eventually die due to starvation, as climate change alters the web.