What structure forms during angiosperm fertilization but does not form during fertilization among other types of plants?

Hybrid instruments that play sounds that are part sampled and part synthesized are known as:

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Subduction zones form when an oceanic plate collides with another oceanic plate or continental plate. the continental crust is lighter and less dense than oceanic crust. continental crust's density is approximately 2.7 grams per cubic centimeter. oceanic crust is thinner and the average density is about 3.3 cubic centimeters. when the two crustal plates converge the oceanic plate always bends and subducts beneath a continental plate. once the oceanic crust subjects, the rocks are subjected to changes in heat and pressure. because of this, we would expect to find rocks in the area of a subduction. a) clastic b) igneous c) metamorphic d) sedimentary