1325 time stamp & Qpost 1325
1343 time stamp & Qpost 1343
When does a bird sing?
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Birds sing to defend and impress. For a bird, singing can be draining. It is both energetically expensive and alerts predators. So then why do birds sing? Evidence suggests that in part, it is to proclaim and defend their territories in birds, the areas defended by males, pairs, or families as dedicated nesting sites and/or foraging areas …
1353 time stamp & Qpost 1353
[red mud]
Bauxite tailings, also known as bauxite residue, red mud, red sludge, or alumina refinery residues (ARR), is a highly alkaline waste product composed mainly of iron oxide that is generated in the industrial production of alumina (aluminium oxide, the principal raw material used in the manufacture of aluminium metal and also widely used in the manufacture of ceramics, abrasives and refractories).