linguistic:paraphrasing, structural:reformatting, linguistic:voice_change, information:extraction, structural:expansion
Distribution and habitat

Coast redwoods occupy a narrow strip of land approximately 750 km (470 mi) in length and 8–75 km (5–47 mi) in width along the Pacific coast of North America; the most southerly native grove is in Monterey County, California, and the most northerly groves are in extreme southwestern Oregon. The aforementioned qualification of "native" is because the species was introduced to various locations in Victoria, Australia, in the 1930s for experimental reasons and have since flourished. The prevailing native elevation range is 30–750 m (100–2,460 ft) above sea level, occasionally down to 0 and up to about 900 m (3,000 ft). They usually grow in the mountains where precipitation from the incoming moisture off the ocean is greater. The tallest and oldest trees are found in deep valleys and gullies, where year-round streams can flow, and fog drip is regular. The terrain also made it harder for loggers to get to the trees and to get them out after felling. The trees above the fog layer, above about 700 m (2,300 ft), are shorter and smaller due to the drier, windier, and colder conditions. In addition, Douglas-fir, pine, and tanoak often crowd out redwoods at these elevations. Few redwoods grow close to the ocean, due to intense salt spray, sand, and wind. Coalescence of coastal fog accounts for a considerable part of the trees' water needs. Fog in the 21st century is, however, reduced from what it was in the prior century, which is a problem that may be compounded by climate change.