(q) ‘forest’ is an area of land of at least 0.5 hectare, with tree crown cover or an equivalent stocking level of at least 10 per cent of the area, covered with trees with the potential to reach a minimum height of at least 5 metres at maturity at their place of growth, including groups of growing young natural trees, or a plantation that has yet to reach a tree crown cover or equivalent stocking level of at least 10 per cent of the area or tree height of at least 5 metres, including any area that normally forms part of the forest area but on which there are temporarily no trees as a result of human intervention, such as harvesting, or a ...[+++]s a result of natural causes, but which area can be expected to revert to forest;

(b) Where two independent (separate and complete) radio systems are required under this Subpart, each system must have an independent antenna installation except that, where rigidly supported non-wire antennae or other antenna installations of equivalent reliability are used, only one antenna is required.

In addition, a trade-off between the number of base stations and the height of the antennas is also a consideration that underpins the design of each operational facility.

(c) If, after passing the outer marker or equivalent position in accordance with (a) above, the reported RVR/visibility falls below the applicable minimum, the approach may be continued to DA/H or MDA/H.

They propagate in a relatively straight line, like light, with the result that, because of the curvature of the earth, their range is determined by the height of the transmitting and receiving antennae.

In fact, I did a calculation which shows you would have to fill the Senate chamber to a height of around 1,000 CN Towers of coal to equal what we would have had to burn if we had not had CANDU technologies to rely on.