Two items are equal in size, the denser one will be lighter.
be heavier.
have more volume.
have less volume.

Heavier I believe. It’s been a few years since I did this

Carbon monoxide is usually more dangerous indoors.

The changes to agriculture in the united states since 1900 is that increased mechanization has increased food production, thereby increasing the need for labor. there has been an increased need for higher speeds of food production due the fact that the population in the united states continues to rise.