Flue slope. Question-I've seen this type of venting 3-4 times a month in older houses and never had anyone complain. The bottom metal flue is the 80% furnace with an uphill rise from it to the newly lined masonry chimney (stainless steel liner).
Monarch butterflies utilize different habitat in the warm months versus the cold months. In the spring, summer and early fall, they can be found wherever there are milkweeds. Monarchs lay their eggs on milkweeds and they're always searching for them in fields, meadows and parks.
Caterpillars feed on specific plants that we refer to as their host plants. Each species of butterflies have their own particular host plants. For example, Monarch caterpillars feed only on Milkweeds. Most caterpillars feed on leaves, but some will also eat the flowers and seeds.