Darwin's "Origin of Species" and Lamark's "Theory of Inherited Characteristics"
The question is not complete, but luckily I could sneak the options.
The answer would be stomata allow plants to obtain certain minerals from the ground.
Ok so choose 2 ecosystems which is not that hard aquatic and terrestrial research your information on the sight i can not do the work for you, don't forget to check your spelling and punctuation
