The upper metal flue is the water heater with an upward slope from it till right before the chimney-then it turns down to drop into the furnace flue and they become 1 flue entering the chimney.
Butterflies and moths are a group of insects called Lepidoptera. Like all insects, butterflies and moths have a head, thorax, abdomen, two antennae, and six legs.Additionally, moths and butterflies have four wings that are almost always covered by colored scales, and a coiled proboscis for drinking liquids such as flower nectar.ike all insects, butterflies and moths have a head, thorax, abdomen, two antennae, and six legs. Additionally, moths and butterflies have four wings that are almost always covered by colored scales, and a coiled proboscis for drinking liquids such as flower nectar.
1 How can you tell the difference between a butterfly and a moth? 2  One of the easiest ways to tell the difference between a butterfly and a moth is to look at the antennae. A butterflyâs antennae are club-shaped with a long shaft and a bulb at the end. A mothâs antennae are feathery or saw-edged. Butterflies and moths have many things in common, mainly scales that cover their bodies and wings.