In biology, name the term when a whitish liquid excrete out from a man's private part.

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 of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?

Why do we perceive objects as retaining their brightness under different lighting levels?