Answer:
a. By Calculating magnetic reversals.
Explanation:
They determine the age of the ocean floor by examining magnetic fields in the planet Earth.
Baltes' lifespan perspective that development is lifelong, multidimensional, multidirectional, plastic, contextual, and multidisciplinary.
Many disciplines are capable of make a contribution critical ideas that combine knowledge, which can also additionally in the end bring about the formation of a brand new and enriched expertise of improvement throughout the lifespan.
Baltes is regarding the truth that a complicated interaction of things impact improvement throughout the lifespan, such as biological, cognitive, and socioemotional changes. Baltes argues that a dynamic interplay of those elements is what affects an individual’s improvement.
To learn more about socio emotional changes here
brainly.com/question/24305083
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The answer would be kingdom
It is defined as well idk you gotta give me options man
