Main articles: Growth hormone 1 and Growth hormone 2. Genes for human growth hormone, known as growth hormone 1 (somatotropin) and growth hormone 2, are localized in the q22-24 region of chromosome 17 and are closely related to human chorionic somatomammotropin (also known as placental lactogen) genes.
The U-shape of the marginal cost curve is directly attributable to increasing, then decreasing marginal returns (and the law of diminishing marginal returns). As marginal product (and marginal returns) increases for relatively small output quantities, marginal cost declines.
A marginal abatement cost curve represents the relationship between the cost-effectiveness of different. abatement options and the total amount of GHG abated (cf. table 1). It reflects the additional costs of. reducing the last unit of carbon and is upward-sloping: i.e. marginal costs rise with the increase of the.