These conifers have needle-shaped leaves - virtually inedible - so the forest supports very little animal life.

These conifers have needle-shaped leaves - virtually inedible - so the forest supports very little animal life.

The needle-shaped leaves of the conifers are virtually inedible so this forest supports very little animal life.

The fragments with smaller x/y values can have a wide variety of y/z values and can be box-like (when they have smaller y/z values), needle-shaped (when they have larger y/z values) and plate-like (when they have intermediate values of y/z).