Your answer is correct, Vasoconstriction
<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
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</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>
It's the <span>chloroplast.
Hope this helps !
Photon</span>
Species are single organisms that are able to reproduce, while a population is a group of species living in the same general area.
I don’t know the answer but i can recommend two app that might
AP Bio
Cel Biology-101
