Ilove to use this for my bio hw so my question is a group of similar cells that perform a particular function is a- an organ b- an organ system c- a tissue d- a division of labor

I'm pretty sure the answer is B.

Hope this helps and don't forget to hit that heart :)

I believe the answer is C.

rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds