The chart shows characteristics of four different groups of invertebrate animals.
Animal
1
2
Characteristics
Has a centralized body cavity,
uses pores and specialized cells
to obtain oxygen from water
Has a soft body and may have a
shel; uses ils or lungs for
obtaining oxygen
Has arms that extend from the
middle of the body, uses tube
feet for obtaining oxygen
Has a segmented body, obtains
oxygen through skin
3
Which set of characteristics describes an echinoderm?
Animal 1
Animal 2
Animal 3
Animal 4

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?

How do cfcs cause ozone depletion? how do cfcs cause ozone depletion? ultraviolet radiation breaks down cfcs, molecules containing chlorine. chlorine then breaks one oxygen atom away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation breaks down cfcs, molecules containing chlorine. chlorine then breaks two oxygen atoms away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation creates cfcs, molecules containing chlorine. chlorine then breaks two oxygen atoms away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation creates cfcs, molecules containing chlorine. chlorine then breaks one oxygen atom away from ozone, leaving behind a paired oxygen molecule.