4. The nervous system helps the respiratory system by
A. protecting and supporting the heart
sending message to diaphragm to contract
B. breaking down nutrients needed by lung tissue
C. carrying oxygen to lungs

Si una estrella no tiene paralaje medible, ¿qué puedes inferir?

You have 125g of a certain seasoning and are told that it contains 76.0 g of salt what is the percentage of salt by mass in this seasoning

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. the values of phosphorous acid are 1.30 6.70 calculate the ph for each of the given points in the titration of 50.0 ml of 1.5 m h3po3(aq) with 1.5 m koh(aq) .