Symbiosis

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The tapeworm lives inside of its host intestines, and feeds off of the nutrients. This can harm the host animal by causing low nutrition and disease.

A tick biting a deer and living off of its blood. The deer is harmed, but not killed.

Burduck seeds (the spikey things that stick to your clothes) get caught on animal fur until they fall off and grow into new burdock plants. The animals are not affected.

1 species benefits, 1 species is eaten.

A bat uses echolocation to track and eat a mosquito.

1 species benefits, 1 species is unaffected ( +. 0 )

1 species benefits, 1 species is harmed ( + - )

Both Species Benefit ( + + )