"What type of test would you use to determine whether observed data constitute evidence of genetic linkage or are simply a case of chance variation from expected values?"

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

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above