Sally was curious as to the type of birdseed that the birds in her yard preferred. She conducted an experiment and found these results. Her dependent variable is . Her independent variable is . The results show that the birds prefer of seeds.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

trachea, alveoli, lung capillaries, arteries

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.

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