Which microphone is often used to view metal surfaces

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment

Describe the function of the endomembrane system? what organelles are involved?