Cool-season grasses usually start growing two weeks after planting, while warm-season grasses can take up to 30 days to germinate. Cool-season grasses usually start growing two weeks after planting, while warm-season grasses can take up to 30 days to germinate.
substratum - an indigenous language that contributes features to the language of an invading people who impose their language on the indigenous population; the Celtic languages of Britain are a substrate for English
The tectum (Latin: roof) is a region of the brain, specifically the dorsal part of the mesencephalon (midbrain). This is contrasted with the tegmentum, which refers to the region ventral to the ventricular system. The tectum is responsible for auditory and visual reflexes.