What are the two ways that organisms on the bottom of deep sea food chains acquire energy?
a.
photosynthesis and chemosynthesis
b.
chemosynthesis and marine snow
c.
marine snow and photosynthesis
d.
chemosynthesis and predation

I think the correct answer from the choices listed above is option B. The two ways that organisms on the bottom of deep sea food chains acquire energy is by chemosynthesis and marine snow. Chemosynthesis is the biological conversion of one or more carbon-containing molecules and nutrients into organic matter. Marine snow is a shower of organic material falling from upper waters to the deep ocean. 

A) 4 amusingb)alpha particle is a helium nucleus. it contains 2 protons and 2 neutrons.c)alpha particle has charge of +2.