Adog runs out the back door of a house and stops to grab a bone. then the dog returns to the house. the graph shows the motion of the dog. for how many seconds was the dog stopped?

Many organs are involved in the processes of keeping the blood and the body clean. when poisonous or harmful substances are in the blood, they are absorbed by the and released in a less harmful form. when wastes are present in the blood, they are filtered out and removed from the body by the

Parasitism could be considered a form of which of these types of relationships? -mutualism -commensalism -predator-prey -mimicry

Adistinctive characteristic of mammals that is not observed in other vertebrates is