Some birds follow moving swarms of army ants in the tropics. As the ants march along the forest floor hunting insects, birds follow and pick off any insects that fly or jump out of the way of the ants. This situation is an example of what kind of species interaction between the birds and the ants?

1. the geologists have established a set of principals that can can be used o determine the relative ages of rock. this principal is applied to sedimentary and volcanic rocks. the rocks exposed to wall of grand canyon has layers and by studying the number of horizontal layers in the rock(strata) the relative age can be determined. the layer first formed will appear at the bottom and the the layer of strata last formed appear at the top. by using this information the approximate age of rocks can be determined.

2. carbon dating is used to find the relative age of rock in numbers which means for the rocks that has age between 1-70,000 years.

3. for the rocks of age range between 1,000 - billion of years potassium-argon dating is used.

i believe your answer would be phagocytosis