A pure breed of roses always produces red flowers. The sudden appearance of a yellow rose on this plant would be evidence of
O segregation
O mutation.
O grafting
O dominance.

Name the following: (a) category of pathogen that causes diseases, like common cold and mumps. (b) the microorganism that requires a host to produce.

How many years would it take the atlantic ocean to grow 500 centimeters? show your work.

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