Compare and contrast the reaction between 1) halogens and alkanes and between 2) halogens and alkenes.

What is a group of organisms that are closely related and share similar characteristics

What happens when water’s salinity increases? mass decreases. freezing point decreases. buoyancy of objects decreases. the amount of dissolved minerals decreases.

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000