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
tapetum lucidum. A layer of tissue in the choroid of the eye between the vascular and capillary layers in some animals, but not in humans. This membrane reflects light shined into the animal's eyes.apetum lucidum. A reflecting pigment layer lying behind the visual receptors of the retina of certain mammals (e.g. cats, dogs), birds and fish, which gives a shining appearance to the eyes when illuminated in the dark.