All of the following are true facts about enzymes except
a) all living cells have enzymes.
b) life would not be possible without enzymes.
c) enzymes can speed chemical reactions by 100s to billions of times.
d) there are a few types of enzymes, but they each perform many types of reactions.

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.