The dermis of mammalian skin, including that of humans, contains a large amount of extracellular matrix proteins, including collagen and elastin. As a person ages, the amount of elastin in the dermis declines. Which cell types is likely to be the cause of this change in the dermis of the skin?

a fibroblast

Explanation:

Based on the scenario being described within the question it can be said that the cell types that is most likely the cause for this would be a fibroblast. This is a type of biological cell that synthesizes the extracellular matrix and collagen, as well as other responsibilities such as producing the structural framework (stroma) for animal tissues.

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation: