Normally tree rings will disappear, damage, or go missing when the tree doesn't have enough nutrients, another factor that contributes to that is drought.
The oldest oceanic crust is found at the mid-ocean ridges. Thus, option "A" is correct.
<h3>How old is the youngest oceanic crust?</h3>
The ocean crust is about younger than 200 million years (for example, smaller than 5% of the age of the earth).
The crust is most naive (still being created by volcanic eruptions) along the axis of the mid-ocean ridges and increases in age down the sides of the mid-ocean rises and out onto the more serious basin floors.
Thus, option "A" is correct.
To learn more about oceanic crust click here:
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The number of producers is more than consumers and top carnivores in ecosystem. for example:- in the food chain of grass--goat--man,atleast 90% of energy is pasted to other level and 10% will be stored at that level it self.
grass goat man
50/100 40/80 30/60.
as we human beings depend on plants and animals for our food for our whole life we need atleast 100 numbers of small plants for one week.
Answer:
<u>Pruning</u>
Explanation:
Pruning or synaptic pruning is brain's way of clearing unnecessary signals that are no longer needed. It mostly occur in childhood and adolescence because brain want to get faster by avoiding unused impulses in Synapses. Synapse is the space between neurons through which signals are being transferred.
