What benefit is gained by intestinal bacteria living in a mutualistic relationship with an animal?

Aseries of connections of food chain in an ecosystem is called a what

Where is having brightly colored feathers that attract mates most clearly an adaptation for a bird? a. a forest with dense vegetation b. a sandy beach beside an ocean c. a snowy tundra with little vegetation d. a swamp with many hawks that eat birds

Describe the process of nociception using the four phases of