Plants need carbon dioxide in order to survive. Plants get this gas from , which is something all organisms need.

thinking it would be d not too sure but i think it's right

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

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

the answer is d p: cell, q: organ, r: organ system, s: tissue