You drove through Iowa in the spring and noticed that along a stretch of several kilometers, every third fence post had a male red-winged blackbird perched on it defending its nesting territory. This is an example of:.

You drove through Iowa in the spring and noticed that along a stretch of several kilometers, every third fence post had a male red-winged blackbird perched on it defending its nesting territory. This is an example of uniform dispersion.

Explanation:

There are usually three dispersion patterns :

ClumpingUniform dispersion Random dispersion

Clumping is the most common.

Uniform dispersion occurs when

resources are scarce Individuals are evenly spaced in a habitat Due to competition or territorial behavior

While Random dispersion occurs when resources are plentiful.

Hence ,This is an example of uniform dispersion.

The answer is atmosphere. there are four spheres of the earth: 1. geosphere (from greek word 'geo' = ground), 2. hydrosphere (from greek word 'hydro' = water), 3. biosphere (from greek word 'bio' = life), and 4. atmosphere (from greek word 'atmo' = air). a magnetosphere is a region of space around astronomical objects controlled by the magnetic field of that object. through the process of elimination, since lightning is present in the air, it can be found in the atmosphere.

2hydrogen and 1 covalent