10. An example of an adaptation that might increase fitness is O a desert cactus with thin, sharp needles instead of leaves to prevent water loss
O mammal with white fur in a tropical rain forest.
O a bird that migrates across the pacific ocean every year and eats only corn
O a hunting dog that has been trained to perform circus tricks

Anyone know the answer???

Explanation:

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several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.