D igneous intrusions is because it is the valuable
Ghrelin is secreted by epsilon cells
Hope that helps :)
Answer:
40 weeks
Explanation:
A product life cycle refers to the sequence of stages which a product goes through. There are four stages of product cycle, they are introduction, growth, maturity and decline. The life cycle of a product is always associated with changes in the marketing situation. Nowadays, the a product life cycle usually lasts for about 40 weeks.
