<span>Features matched with its description
A: stalactites 3: tubes with hollow centers
B: stalagmites 2: tubes without hollow centers</span>
<span>C: speleology 1: cave science</span>
D: speleothems 4: cave features
<span>
</span>Speleology is shortly defined as the<span> scientific study of caves.</span> Speleothems are structures<span> formed in a cave by the deposits of minerals from water dripping from the fractures of the ceiling of the cave. Most common types are the stalactites and stalagmites. </span>
<span>Stalactites began as a ring of crystals which later becomes small tubes with a hollow center.</span><span> Stalagmites, on the other hand, are tubes formed without hollow centers. </span>
C, as A,B, and D aren't true.
An enzyme is a biological molecule that acts as a catalyst in many reactions. They speed up chemical reactions especially the reactions inside living organisms. An enzyme is made up of amino acids. They are known to be very efficient catalysts. Hope this answers the question!
Cells don't grow very big because they have to be able to diffuse through material easily. Also, when cells are small and plentiful they are easy to replace when damaged.
Restoring farmlands to wetlands consists of a lot of pro and cons. Firstly, they should consider that wetlands will greatly filter carbon dioxide from the atmosphere and reduce greenhouse gases. Wetlands restoration would probably affect the lives of the nearby human residents negatively. This is due to the fact that wetlands provides an optimal habitat to wild animals especially dangerous carnivores like alligators. The regeneration project will expand the habitats of animals, and clean the water system but it will remove the nutrients from the soil.
