How did the geologist probably date the extrusion and intrusion?

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

Below are the three main organs that make up the plant body. what is the main function of the structure that is identified as b in the picture above? it anchors the plant. it produces food. it absorbs nutrients. it supports the plan

Most enzyme names end in the