(( earth science ))

a caldera is a depression in a volcanic mountain. a caldera may form when

a.
the magma chamber cools, hardens, and widens

b.
mountain rocks melt into lava and flow downhill

c.
the mountain collapses into an emptied magma chamber

d.
wind and water erode the center of the mountain

Charles darwin published his theory of evolution in 1859. in what way foes modern evolutionary theory differ from the theory as proposed by darwin? a) darwin inferred that individuals can evolve, but modern generic science has shown that this is not true. b)darwin inferred that individuals do not evolve, but modern genetic science has shown that this is not true. c)modern science has disproved most of darwin's original theory of evolution, because darwin knew nothing about generations and their role in heredity. d)generic studies have shown that gene expression and other factors operate along with natural selection, but most of darwin's theory has been supported by modern science.

The basic types of tissue in the human body are

Is becoming less expensive to screen blood samples for dna certain diseases have genetic basis what is possible ethical concern about the availability of inexpensive dna testing