Adrenaline is a hormone that increases the heart rate to respond the the Fight or Flight reflex. This interaction involves which of the following systems

the answer is c) an oak tree

if you look up in the top right corner you'll see your current profile picture, click than click "view profile" you'll be able to change it there.

phaneritic textures in which phaner means visible so phaneritic textures are standard of impertinent volcanic rocks. these rocks crystallized gradually under the surface of earth. when the magma cools deliberately then the ores have chance to develop and produce long crystals.